Structural Failure Analysis and Prediction Methods for Aerospace Vehicles and Structures

Aerothermal and Structural Dynamic Analysis of High-Speed Flight Vehicles

Author(s): S.Y. Ho

Pp: 54-84 (31)

DOI: 10.2174/978160805024611001010054

* (Excluding Mailing and Handling)

Abstract

This chapter gives a brief overview of the state-of-the-art and insight into the key aerothermal issues and challenges for aero-thermal-structural analysis and failure assessment of modern high-speed aerospace vehicles. Approximate engineering methods and computational methods to numerically simulate and understand the physics of high-speed flows surrounding the vehicle and hence, predict aerodynamic heating, the pressure and shear forces, and also the structural response to the aeroheating, aerodynamic and aeroacoustic loads are discussed in the context of the concerns of the aerospace vehicle designer and service life / structural failure analyst. The discussion is focused on those predictive methodologies that can be readily implemented, adequately robust and suitable for somewhat more complex vehicle designs and missions. Example applications, including a real-life application, are presented. Future directions, in particular the analytical / modelling challenges in the use of smart structures (e.g., SMAs for structural response / shape control), active cooling concepts and exotic composite materials for high-speed / performance aerospace vehicles are also discussed.

Related Journals
Related Books
© 2025 Bentham Science Publishers | Privacy Policy
Request history8.2.27PHP Version189msRequest Duration26MBMemory UsageGET chapter/{id}/{param?}Route
  • warninglog[15:39:30] LOG.warning: Optional parameter $id declared before required parameter $request is implic...
  • Booting (95.15ms)time
  • Application (93.67ms)time
  • 1 x Booting (50.39%)
    95.15ms
    1 x Application (49.61%)
    93.67ms
    12 templates were rendered
    • ebook.chapter_detailschapter_details.blade.php#?blade
    • layouts.chapter_header_sectionchapter_header_section.blade.php#?blade
    • ebook.chapter_top_bannerchapter_top_banner.blade.php#?blade
    • ebook.chapter_bottom_bannerchapter_bottom_banner.blade.php#?blade
    • ebook.ebook_right_bannerebook_right_banner.blade.php#?blade
    • includes.inc_related_journalsinc_related_journals.blade.php#?blade
    • includes.inc_related_ebooksinc_related_ebooks.blade.php#?blade
    • layouts.appapp.blade.php#?blade
    • layouts._login_access_login_access.blade.php#?blade
    • layouts._header_header.blade.php#?blade
    • layouts._main_menu_main_menu.blade.php#?blade
    • layouts._footer_menu_footer_menu.blade.php#?blade
    uri
    GET chapter/{id}/{param?}
    middleware
    web, check_user_access
    controller
    App\Http\Controllers\ChapterController@GetChapterDetails
    namespace
    App\Http\Controllers
    where
    as
    chapter
    file
    app/Http/Controllers/ChapterController.php:1350-1704
    19 statements were executed22.41ms
    • Connection Establishedalphaeurekaselec_live_10_06_2022UserAccessCheck.php#24
      Backtrace
      • 9. middleware::check_user_access:24
      • 10. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 11. vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php:50
      • 12. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 13. vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php:88
    • INSERT INTO visitor_ip_address (ip_address,visitor_agent,visitor_count, created_on,updated_on) VALUES ('59142255','',1,1740497970,1740497970) ON DUPLICATE KEY UPDATE visitor_count=visitor_count + 1, updated_on=1740497970
      1.34msalphaeurekaselec_live_10_06_2022UserAccessCheck.php#24
      Backtrace
      • 11. middleware::check_user_access:24
      • 12. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 13. vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php:50
      • 14. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 15. vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php:88
    • INSERT INTO visitor_ip_address_detail (ip_address,visitor_url,visitor_count, created_on,updated_on) VALUES ('59142255','/chapter/1351',1,1740497970,1740497970)
      190μsalphaeurekaselec_live_10_06_2022UserAccessCheck.php#27
      Backtrace
      • 11. middleware::check_user_access:27
      • 12. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 13. vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php:50
      • 14. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 15. vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php:88
    • (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_journal_volume_trail WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_journal_volume_corporate WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_journal_volume_token WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_ebook_volume_trail WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_ebook_volume_corporate WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_ebook_volume_token WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_issue_trail WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_issue_corporate WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_issue_token WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_article_trail WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_article_corporate WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_article_token WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_chapter_trail WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_chapter_corporate WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_chapter_token WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_disease_corporate WHERE to_ip >= 59142255 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59142255) limit 1
      12.02msalphaeurekaselec_live_10_06_2022UserAccess.php#784
      Bindings
      • 0: 59142255
      • 1: 59142255
      • 2: 59142255
      • 3: 59142255
      • 4: 59142255
      • 5: 59142255
      • 6: 59142255
      • 7: 59142255
      • 8: 59142255
      • 9: 59142255
      • 10: 59142255
      • 11: 59142255
      • 12: 59142255
      • 13: 59142255
      • 14: 59142255
      • 15: 59142255
      Backtrace
      • 14. app/Models/UserAccess/UserAccess.php:784
      • 15. middleware::check_user_access:114
      • 16. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php:50
      • 18. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
    • select * from `chapter` where `chapter_id` = '1351' limit 1
      380μsalphaeurekaselec_live_10_06_2022ChapterController.php#1406
      Bindings
      • 0: 1351
      Backtrace
      • 16. app/Http/Controllers/ChapterController.php:1406
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 18. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 19. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
      • 20. vendor/laravel/framework/src/Illuminate/Routing/Route.php:206
    • select CONCAT_WS(' ',au.first_name, ' ', ifnull(au.initials,''), ' ', au.last_name) as authors, CONCAT(au.last_name, IFNULL(CONCAT(' ', au.initials), ''), ' ', au.first_name) AS authorsRIS, CONCAT_WS(' ',au.last_name, ' ', ifnull(au.initials,''), ' ', au.first_name) as authorsCiteAs, CONCAT_WS(' ',au.first_name, IFNULL(CONCAT(' ', au.initials), ''), IFNULL(CONCAT(' ', au.last_name), '')) as authorsmodal , `au`.*, `af`.`ror_id`, `af`.`institution`, `af`.`department`, `af`.`country`, `af`.`city`, `af`.`address`, (GROUP_CONCAT(TRIM(BOTH ', ' FROM CONCAT(ifnull(concat(af.institution,','),''), ifnull(concat(af.department,','),''), ifnull(concat(af.address,','),''), ifnull(concat(af.city,','),''), ifnull(concat(af.country,','),''), ifnull(concat(af.postal_code,','),''), ifnull(concat(af.phone,','),''), ifnull(concat(af.fax,','),''))) SEPARATOR '|')) as `author_affiliation`, (GROUP_CONCAT(TRIM(BOTH ', ' FROM CONCAT(ifnull(concat(af.web_view,','),''))) SEPARATOR '|')) as `web_view` from `author` as `au` left join `author_affiliation` as `af` on `au`.`author_id` = `af`.`author_id` where `au`.`chapter_id` = '1351' group by `au`.`author_id` order by `au`.`article_id` asc, `au`.`sequence` asc
      630μsalphaeurekaselec_live_10_06_2022Author.php#86
      Bindings
      • 0: 1351
      Backtrace
      • 13. app/Models/Author.php:86
      • 14. app/Http/Controllers/ChapterController.php:1411
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 16. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select * from `keywords` where `chapter_id` = '1351'
      260μsalphaeurekaselec_live_10_06_2022ChapterController.php#1415
      Bindings
      • 0: 1351
      Backtrace
      • 15. app/Http/Controllers/ChapterController.php:1415
      • 16. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 17. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
      • 19. vendor/laravel/framework/src/Illuminate/Routing/Route.php:206
    • select * from `ebook` where `ebook_id` = 100 limit 1
      280μsalphaeurekaselec_live_10_06_2022ChapterController.php#1430
      Bindings
      • 0: 100
      Backtrace
      • 16. app/Http/Controllers/ChapterController.php:1430
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 18. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 19. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
      • 20. vendor/laravel/framework/src/Illuminate/Routing/Route.php:206
    • select count(*) as aggregate from `subject_ebook` as `se` inner join `ebook` as `e` on `e`.`ebook_id` = `se`.`ebook_id` inner join `ebook_volume` as `v` on `v`.`ebook_id` = `e`.`ebook_id` where subject_id IN (select subject_id FROM subject_ebook WHERE ebook_id=100) and se.ebook_id!=100 and v.ebook_status='1'
      1.13msalphaeurekaselec_live_10_06_2022Subject.php#238
      Backtrace
      • 16. app/Models/Subject.php:238
      • 17. app/Http/Controllers/ChapterController.php:1434
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 19. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 20. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select distinct v.nid as volume_id,e.nid,e.title,v.issn,v.eissn,v.isbn,v.eisbn,e.ebook_id, v.image_file_name,v.file_path,v.flyer_link,v.ebook_volume_id, v.volume_name,v.doi,v.year_id,v.introduction from `subject_ebook` as `se` inner join `ebook` as `e` on `e`.`ebook_id` = `se`.`ebook_id` inner join `ebook_volume` as `v` on `v`.`ebook_id` = `e`.`ebook_id` where subject_id IN (select subject_id FROM subject_ebook WHERE ebook_id=100) and se.ebook_id!=100 and v.ebook_status='1' limit 10 offset 0
      770μsalphaeurekaselec_live_10_06_2022Subject.php#238
      Backtrace
      • 14. app/Models/Subject.php:238
      • 15. app/Http/Controllers/ChapterController.php:1434
      • 16. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 17. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select count(*) as aggregate from `subject_journal` as `sj` inner join `journal` as `j` on `j`.`journal_id` = `sj`.`journal_id` where subject_id IN (select subject_id FROM subject_ebook WHERE ebook_id=100)
      430μsalphaeurekaselec_live_10_06_2022Subject.php#255
      Backtrace
      • 16. app/Models/Subject.php:255
      • 17. app/Http/Controllers/ChapterController.php:1435
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 19. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 20. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select distinct j.nid as journal_nid,j.title,j.subtitle,j.issn,j.eissn,j.keyword,sj.journal_id,j.image_file_name,j.flyer_link from `subject_journal` as `sj` inner join `journal` as `j` on `j`.`journal_id` = `sj`.`journal_id` where subject_id IN (select subject_id FROM subject_ebook WHERE ebook_id=100) limit 10 offset 0
      500μsalphaeurekaselec_live_10_06_2022Subject.php#255
      Backtrace
      • 14. app/Models/Subject.php:255
      • 15. app/Http/Controllers/ChapterController.php:1435
      • 16. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 17. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select `e`.*, `a`.*, `y`.`year`, `e`.`ebook_volume_id` as `ebook_volume_id`, `a`.`ebook_volume_id` as `ebk_vol_id`, `e`.`ebook_id` as `ebk_ebook_id` from `ebook_volume` as `e` left join `author` as `a` on `e`.`ebook_volume_id` = `a`.`ebook_volume_id` left join `year` as `y` on `y`.`id` = `e`.`year_id` where `e`.`ebook_volume_id` = 887 and `e`.`is_uploaded` = 1
      1.06msalphaeurekaselec_live_10_06_2022EbookVolume.php#271
      Bindings
      • 0: 887
      • 1: 1
      Backtrace
      • 13. app/Models/EbookVolume.php:271
      • 14. app/Http/Controllers/ChapterController.php:1438
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 16. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select count(*) rcd from `ebook_volume` where `ebook_id` = 100 and ebook_volume_id <> 887 limit 1
      250μsalphaeurekaselec_live_10_06_2022EbookVolume.php#999
      Bindings
      • 0: 100
      Backtrace
      • 14. app/Models/EbookVolume.php:999
      • 15. app/Http/Controllers/ChapterController.php:1462
      • 16. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 17. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select count(*) as total_count, content_type_access_id as access_type from ebook_access where content_type_id = '1351' and content_type = 'c' and ( (from_date <= CURDATE() and to_date >= CURDATE() and perpetual= 0) or (from_date is null and to_date is null and perpetual= 1) )
      290μsalphaeurekaselec_live_10_06_2022ContentAccess.php#647
      Backtrace
      • 11. app/Models/ContentAccess.php:647
      • 12. app/Http/Controllers/ChapterController.php:1465
      • 13. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 14. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select count(*) as total_count, content_type_access_id as access_type from ebook_access where content_type_id = '887' and content_type = 'v' and ( (from_date <= CURDATE() and to_date >= CURDATE() and perpetual= 0) or (from_date is null and to_date is null and perpetual= 1) )
      230μsalphaeurekaselec_live_10_06_2022ContentAccess.php#647
      Backtrace
      • 11. app/Models/ContentAccess.php:647
      • 12. app/Http/Controllers/ChapterController.php:1478
      • 13. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 14. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Trial Access" as access_base_text, CASE j.type WHEN 111 THEN true ELSE false END as terms_popup, "S" as content_download_type, null as restricted_user_access_key, null as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"ebook_volume" as access_level,"" as chapter_id from `user_access_ebook_volume_trail` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59142255 and j.to_ip >=59142255 )) and ((j.from_date <= 1740497970 and j.to_date >= 1740497970 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.volume_id = 887) union (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Subscribed" as access_base_text, false as terms_popup, "S" as content_download_type, null as restricted_user_access_key, null as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"ebook_volume" as access_level,"" as chapter_id from `user_access_ebook_volume_corporate` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59142255 and j.to_ip >=59142255 )) and ((j.from_date <= 1740497970 and j.to_date >= 1740497970 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.volume_id = 887) union (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Token Based Access" as access_base_text, false as terms_popup, "R" as content_download_type, j.uc_id as restricted_user_access_key, "v" as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"ebook_volume" as access_level,"" as chapter_id from `user_access_ebook_volume_token` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59142255 and j.to_ip >=59142255 )) and ((j.from_date <= 1740497970 and j.to_date >= 1740497970 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.volume_id = 887)
      580μsalphaeurekaselec_live_10_06_2022UserAccess.php#1266
      Backtrace
      • 13. app/Models/UserAccess/UserAccess.php:1266
      • 14. app/Http/Controllers/ChapterController.php:1518
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 16. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Trial Access" as access_base_text, CASE j.type WHEN 111 THEN true ELSE false END as terms_popup, "S" as content_download_type, null as restricted_user_access_key, null as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"chapter" as access_level, j.chapter_id from `user_access_chapter_trail` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59142255 and j.to_ip >=59142255 )) and ((j.from_date <= 1740497970 and j.to_date >= 1740497970 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.chapter_id = 1351) union (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Subscribed" as access_base_text, false as terms_popup, "S" as content_download_type, null as restricted_user_access_key, null as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"chapter" as access_level, j.chapter_id from `user_access_chapter_corporate` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59142255 and j.to_ip >=59142255 )) and ((j.from_date <= 1740497970 and j.to_date >= 1740497970 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.chapter_id = 1351) union (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Token Based Access" as access_base_text, false as terms_popup, "R" as content_download_type, j.uc_id as restricted_user_access_key, "v" as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"chapter" as access_level, j.chapter_id from `user_access_chapter_token` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59142255 and j.to_ip >=59142255 )) and ((j.from_date <= 1740497970 and j.to_date >= 1740497970 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.chapter_id = 1351)
      690μsalphaeurekaselec_live_10_06_2022UserAccess.php#1266
      Backtrace
      • 13. app/Models/UserAccess/UserAccess.php:1266
      • 14. app/Http/Controllers/ChapterController.php:1549
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 16. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select b.banner_link, b.banner_name, b.banner_script, b.banner_remarks, b.banner_file_name, b.banner_placement, bd.content_type, bd.content_id from `tbl_banner` as `b` inner join `tbl_banner_detail` as `bd` on `bd`.`banner_id` = `b`.`banner_id` inner join `users` as `u` on `u`.`id` = `b`.`updated_by` where `b`.`banner_ebook` = 1 and `bd`.`content_type` = 'B' and `bd`.`content_id` = 887 and `b`.`banner_from_date` <= 1740497970 and `b`.`banner_to_date` >= 1740497970 and `b`.`banner_status` = 'A' order by `b`.`banner_id` desc
      1.13msalphaeurekaselec_live_10_06_2022Banner.php#95
      Bindings
      • 0: 1
      • 1: B
      • 2: 887
      • 3: 1740497970
      • 4: 1740497970
      • 5: A
      Backtrace
      • 13. app/Models/Banner.php:95
      • 14. app/Http/helpers.php:404
      • 17. vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:124
      • 18. vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58
      • 19. vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:73
    • select count(*) as aggregate from `uc_cart_products` where cart_id='b40646bb66a63595c3269cf8a76b613a'
      250μsalphaeurekaselec_live_10_06_2022Cart.php#271
      Backtrace
      • 15. app/Models/Cart.php:271
      • 16. view::layouts._header:260
      • 18. vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:124
      • 19. vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58
      • 20. vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:73
    App\Models\Chapter
    1Chapter.php#?
    App\Models\Keywords
    1Keywords.php#?
    App\Models\Ebook
    1Ebook.php#?
        _token
        2HPZxpraZyCjbgzdMIWNcViA79Y0FaYETz91p5Eo
        uc_cart_id
        b40646bb66a63595c3269cf8a76b613a
        _previous
        array:1 [ "url" => "https://alpha.eurekaselect.com/chapter/1351" ]
        _flash
        array:2 [ "old" => [] "new" => [] ]
        PHPDEBUGBAR_STACK_DATA
        []
        path_info
        /chapter/1351
        status_code
        200
        
        status_text
        OK
        format
        html
        content_type
        text/html; charset=UTF-8
        request_query
        []
        
        request_request
        []
        
        request_headers
        0 of 0
        array:17 [ "x-https" => array:1 [ 0 => "1" ] "host" => array:1 [ 0 => "alpha.eurekaselect.com" ] "priority" => array:1 [ 0 => "u=0, i" ] "cookie" => array:1 [ 0 => "wayfindertarget=eyJpdiI6IjV6S3k3QTVRVTZVd3I1YWpJU1Y4NFE9PSIsInZhbHVlIjoiY1dSTkNGbVRrb1Q2bGlsaFR5cXFmMzlUS2tsaEh5M25QSk5xZlpuL3gvND0iLCJtYWMiOiJmZWE4YTc3YmRmMjMwNDhiNzc2NTAzYWM0ZWM5M2QzYmVhMDczNDk2YWNhZTY2NmI3ZTlkOGRhMDIzMzVjNTk3IiwidGFnIjoiIn0%3D; _ga_9F3B5VV3T3=GS1.1.1740497960.1.0.1740497960.60.0.0; _ga=GA1.1.1847699797.1740497961; fpestid=z5j-7kJLU1GK70Rahf-1a8wWfzIYcZtf1Winp1wvTyrmKb8m2ffG6TU21A5OpoX2v2V9qQ; XSRF-TOKEN=eyJpdiI6InAvZGdmN1RyZnRodzhrd1VmVmVnSWc9PSIsInZhbHVlIjoicHA3b05malNiQk5rQVQ2WWdvUVlRZ09mUjB2Yld0MkdWK2M2TTNyMUtzRENSYloxMGlJZlovLzFod3dTSFY5bjVFeGNuSk93ZU9QWjZaRzk3T3B0K201TCtUMGw1WDVQK2hqMXlZV1hHTjNFcGN1QmdNWkIvMHltZUw4V0ppSGoiLCJtYWMiOiIwMTFmYzY0MDNkZGY3MmU4ZGQ5MmM3YTE0MTMxZjYyOWVmNDhiMzY2YTdhZGIxZDIzZjdjODhiOWIzNjRiM2E4IiwidGFnIjoiIn0%3D; alphaeurekaselectnet_session=eyJpdiI6IkZUbWtrKzNlTWVYZkk4a1F3Y3F4WVE9PSIsInZhbHVlIjoiUjZXR3k4WXNKRG5DWVBkODEwd0UvZE8rQTB0MHA5ZGMvaWRqSkMrbUdtRHVySFAvUEpaa09aRXFMUjNlbmxLWlNSa0szRWI2ZDhQNnphSVRKQ0lDaUdlV3FtTW1nUUxvOTYrUExQbUx4RlZFM0RSZlhqUzZDeHg3M2RRamxLRjAiLCJtYWMiOiJlYTI3ZDRiMGQ0MDY3ODNjMmQ5NGUwM2VlYTA5Yjc2YTMzMjM1YjZjMTE0ZjhjZGY4ZmQ4N2Y0M2YyOTE3NDkyIiwidGFnIjoiIn0%3Dwayfindertarget=eyJpdiI6IjV6S3k3QTVRVTZVd3I1YWpJU1Y4NFE9PSIsInZhbHVlIjoiY1dSTkNGbVRrb1Q2bGlsaFR5cXFmMzlUS2tsaEh5M25QSk5xZlpuL3gvND0iLCJtYWMiOiJmZWE4YTc3YmRmMjMw" ] "accept-encoding" => array:1 [ 0 => "gzip, deflate, br, zstd" ] "sec-fetch-dest" => array:1 [ 0 => "document" ] "sec-fetch-user" => array:1 [ 0 => "?1" ] "sec-fetch-mode" => array:1 [ 0 => "navigate" ] "sec-fetch-site" => array:1 [ 0 => "none" ] "accept" => array:1 [ 0 => "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7" ] "user-agent" => array:1 [ 0 => "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)" ] "upgrade-insecure-requests" => array:1 [ 0 => "1" ] "sec-ch-ua-platform" => array:1 [ 0 => ""Windows"" ] "sec-ch-ua-mobile" => array:1 [ 0 => "?0" ] "sec-ch-ua" => array:1 [ 0 => ""HeadlessChrome";v="129", "Not=A?Brand";v="8", "Chromium";v="129"" ] "cache-control" => array:1 [ 0 => "no-cache" ] "pragma" => array:1 [ 0 => "no-cache" ] ]
        request_cookies
        0 of 0
        array:6 [ "wayfindertarget" => null "_ga_9F3B5VV3T3" => null "_ga" => null "fpestid" => null "XSRF-TOKEN" => "2HPZxpraZyCjbgzdMIWNcViA79Y0FaYETz91p5Eo" "alphaeurekaselectnet_session" => "38WZcIG3IFFHjfEnHQSF1L8JZgAiyhibIqZweCQ3" ]
        response_headers
        0 of 0
        array:5 [ "content-type" => array:1 [ 0 => "text/html; charset=UTF-8" ] "cache-control" => array:1 [ 0 => "no-cache, private" ] "date" => array:1 [ 0 => "Tue, 25 Feb 2025 15:39:30 GMT" ] "set-cookie" => array:2 [ 0 => "XSRF-TOKEN=eyJpdiI6InVhZkVLNHpjcm1VYkF3MnIwbkVWVVE9PSIsInZhbHVlIjoiUGFqSXorRElFODZMZXlIVDAwR1RWT3BlSnFCVUdVbnVVbHl6UjMwTkg4elNYeGpRRzc4a2NQQzhJRkU5Z05icHlJK2xDc2RYd2IzdGFZZ0gzN3ZEcmc3QkkvL3NkcUl3TmVPMTNBZTcydm8zN1l5c2RmbTMwWk1rV2VDNUxsbmQiLCJtYWMiOiJkZGJkNWU1YWNmYzVhMzJmNTJmNDhlMmE5OWQ4N2M0ZDRhMTRjNDJiN2JjZThlYTE1YThhOWM4MGZkYWVhNzBmIiwidGFnIjoiIn0%3D; expires=Fri, 28 Feb 2025 03:39:30 GMT; Max-Age=216000; path=/; secure; samesite=laxXSRF-TOKEN=eyJpdiI6InVhZkVLNHpjcm1VYkF3MnIwbkVWVVE9PSIsInZhbHVlIjoiUGFqSXorRElFODZMZXlIVDAwR1RWT3BlSnFCVUdVbnVVbHl6UjMwTkg4elNYeGpRRzc4a2NQQzhJRkU5Z05icHlJK2xDc" 1 => "alphaeurekaselectnet_session=eyJpdiI6ImNGbWFwVEVRT2sybWtWck1xL1g2cFE9PSIsInZhbHVlIjoic2hFMnl0aXRWL3BqUEdEOTBwOC9IRE85dDQ3WUw0WmJnUE1iUHd1WkxQWjJROFZlWlVicUVXRWFtajZ0b1RjUnRmS3pOY1g3MUJXUXJ0OHBpZGk1d0ZCdEpmcktpRDRKTlJhUkFTc1c0eFZPMHpsUmFZc0Z2cDRUNTlWT1dtYmIiLCJtYWMiOiJiYjkzYzE5OTdhNmM0ZjViZDMwZGI4NjZjY2ZkODIxMmFmNGRhOGUwMDFhZWIxMGZiMGExMTYyOWI3M2NkMjhhIiwidGFnIjoiIn0%3D; path=/; secure; httponly; samesite=laxalphaeurekaselectnet_session=eyJpdiI6ImNGbWFwVEVRT2sybWtWck1xL1g2cFE9PSIsInZhbHVlIjoic2hFMnl0aXRWL3BqUEdEOTBwOC9IRE85dDQ3WUw0WmJnUE1iUHd1WkxQWjJROFZlWlVicUVXRWF" ] "Set-Cookie" => array:2 [ 0 => "XSRF-TOKEN=eyJpdiI6InVhZkVLNHpjcm1VYkF3MnIwbkVWVVE9PSIsInZhbHVlIjoiUGFqSXorRElFODZMZXlIVDAwR1RWT3BlSnFCVUdVbnVVbHl6UjMwTkg4elNYeGpRRzc4a2NQQzhJRkU5Z05icHlJK2xDc2RYd2IzdGFZZ0gzN3ZEcmc3QkkvL3NkcUl3TmVPMTNBZTcydm8zN1l5c2RmbTMwWk1rV2VDNUxsbmQiLCJtYWMiOiJkZGJkNWU1YWNmYzVhMzJmNTJmNDhlMmE5OWQ4N2M0ZDRhMTRjNDJiN2JjZThlYTE1YThhOWM4MGZkYWVhNzBmIiwidGFnIjoiIn0%3D; expires=Fri, 28-Feb-2025 03:39:30 GMT; path=/; secureXSRF-TOKEN=eyJpdiI6InVhZkVLNHpjcm1VYkF3MnIwbkVWVVE9PSIsInZhbHVlIjoiUGFqSXorRElFODZMZXlIVDAwR1RWT3BlSnFCVUdVbnVVbHl6UjMwTkg4elNYeGpRRzc4a2NQQzhJRkU5Z05icHlJK2xDc" 1 => "alphaeurekaselectnet_session=eyJpdiI6ImNGbWFwVEVRT2sybWtWck1xL1g2cFE9PSIsInZhbHVlIjoic2hFMnl0aXRWL3BqUEdEOTBwOC9IRE85dDQ3WUw0WmJnUE1iUHd1WkxQWjJROFZlWlVicUVXRWFtajZ0b1RjUnRmS3pOY1g3MUJXUXJ0OHBpZGk1d0ZCdEpmcktpRDRKTlJhUkFTc1c0eFZPMHpsUmFZc0Z2cDRUNTlWT1dtYmIiLCJtYWMiOiJiYjkzYzE5OTdhNmM0ZjViZDMwZGI4NjZjY2ZkODIxMmFmNGRhOGUwMDFhZWIxMGZiMGExMTYyOWI3M2NkMjhhIiwidGFnIjoiIn0%3D; path=/; secure; httponlyalphaeurekaselectnet_session=eyJpdiI6ImNGbWFwVEVRT2sybWtWck1xL1g2cFE9PSIsInZhbHVlIjoic2hFMnl0aXRWL3BqUEdEOTBwOC9IRE85dDQ3WUw0WmJnUE1iUHd1WkxQWjJROFZlWlVicUVXRWF" ] ]
        session_attributes
        0 of 0
        array:5 [ "_token" => "2HPZxpraZyCjbgzdMIWNcViA79Y0FaYETz91p5Eo" "uc_cart_id" => "b40646bb66a63595c3269cf8a76b613a" "_previous" => array:1 [ "url" => "https://alpha.eurekaselect.com/chapter/1351" ] "_flash" => array:2 [ "old" => [] "new" => [] ] "PHPDEBUGBAR_STACK_DATA" => [] ]
        ClearShow all
        Date ↕MethodURLData
        #12025-02-25 15:39:30GET/chapter/1351112193