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destructive inspection

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001510
EISBN: 978-1-62708-217-4
... observed hydraulic fluid spraying from the top of the aircraft. The aircraft was then grounded for complete evaluation of hydraulic system integrity. Non-destructive inspection of main rotor head components revealed the presence of a through thickness crack along the leading edge of the grip, sufficient...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006758
EISBN: 978-1-62708-295-2
..., under adequate lighting conditions and capturing as much visual information as practical. When possible, the initial inspection should be performed before removing the part from an assembly or a structure to document the pristine damage condition of the part before any destructive testing begins...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001517
EISBN: 978-1-62708-217-4
... Abstract The purpose of this investigation was to determine the cause of the ultrasonic signal attenuation noted during an inspection of a composite aircraft component. Although ultrasonics was able to identify the location of the defective areas, destructive analysis had to be utilized...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006772
EISBN: 978-1-62708-295-2
.... It is generally not desirable for an investigator to perform destructive testing/examination of the evidence during the scene investigation. These types of inspections are best left for a controlled laboratory setting that has better availability of disassembly and inspection equipment. Additionally...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001363
EISBN: 978-1-62708-215-0
... of a section of bearing outer race core. The microstructure is typical of heat-treated 52100 steel. 276× Abstract An accidental overspeed condition during wind tunnel testing resulted in the destruction of a propeller rotor The occurrence was initially attributed to malfunction in the collective pitch...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003523
EISBN: 978-1-62708-180-1
... must be preserved. It is generally not desirable for an investigator to perform destructive testing/examination of the evidence during the scene investigation. These types of inspections are best left for a controlled laboratory setting that has better availability of disassembly and inspection...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001433
EISBN: 978-1-62708-235-8
... showed the deposit to possess a large grain size with a low carbon content disposed as carbides along the grain boundaries, a feature which would provide an explanation of the brittle behavior. Subsequent inspection showed that this tube was one of several of the batch ordered for retubing of a boiler...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001432
EISBN: 978-1-62708-221-1
... Abstract During the pre-test inspection following the stress calculation check on a 7-ton capacity Scotch derrick crane, it was noted that threads on the back stay anchorage bolts were of unusually fine pitch (11 tpi) and that the machined faces of the nuts showed irregular pits or depressions...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001059
EISBN: 978-1-62708-214-3
... of these cracks, which were as long as 50mm (2 in.). The field replication described above showed that the cracks were transgranular in nature and highly typical of chloride stress corrosion. Insulation had been stripped off as part of a previous fire-damage inspection, which revealed no sensitization...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0048257
EISBN: 978-1-62708-217-4
... Abstract Evidence of destructive pitting on the gear teeth (AMS 6263 steel) in the area of the pitchline was exhibited by an idler gear for the generator drive of an aircraft engine following test-stand engine testing. The case hardness was investigated to be lower than specified...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001666
EISBN: 978-1-62708-229-7
... and to establish the cause of the cracking. This investigation provided an opportunity to develop various field metallographic techniques that could be used for future disc inspections and, because this disc was not to be returned to service, to validate these techniques by normal destructive methods...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006936
EISBN: 978-1-62708-395-9
... Fig. 1 Ultrasonic nondestructive evaluation (NDE) system components Fig. 2 Common methods of ultrasonic inspection: (a) pitch-catch, (b) through-transmission, (c) pulse-echo Fig. 3 Attributes of an array transducer Fig. 4 Phased array element grouping. Example...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001431
EISBN: 978-1-62708-221-1
.... The adequacy of the procedure is then demonstrated by a practical test involving both NDT and destructive test involving both competence of welders subsequently employed on the job must also be assessed by carrying out the appropriate qualification tests. In many instances production tests plates may be called...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003518
EISBN: 978-1-62708-180-1
...) As soon as possible after failure Properly protect and place subject components in a protected area Prevent destruction of evidence As soon as possible after initial inspection Closer inspection of broken part. Selection of test locations Confirm that crack was due to one or more load cycles...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001127
EISBN: 978-1-62708-214-3
... Examination of General Physical Features Surface Examination Visual Inspection Mechanical Properties Impact Toughness Discussion Conclusion and Recommendations Most Probable Cause Macrofractography Scanning Electron Microscopy/Fractography The white coating was tested using...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006754
EISBN: 978-1-62708-295-2
... protect and place subject components in a protected area Prevent destruction of evidence As soon as possible after initial inspection Closer inspection of broken part. Selection of test locations Confirm that crack was due to one or more load cycles; look for more subtle evidence of heat...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001757
EISBN: 978-1-62708-241-9
... surface from ( b ) crack Fig. 1 Schematic of the compressor section of the J79 engine. The yellow or shaded section indicates the area of the damaged and fractured blade Fig. 9 Microstructure of the fractured 17th stage blade. ( a ) Cross-section inspection shows dark line across...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006821
EISBN: 978-1-62708-329-4
... lost or destroyed after various steps of investigation, including destructive analyses. When inspecting the subject aircraft components, it is often necessary to conduct joint inspections where all interested parties may be present and participate. To ensure all parties have an opportunity...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001709
EISBN: 978-1-62708-229-7
... of a considerable number of the curved tubes at IK boxes was observed. Then, the failed tubes together with one from unfailed tubes, away from IK boxes, were removed for failure analysis using different non destructive and destructive test methods ( 1 ). Investigation On site inspection has shown...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001753
EISBN: 978-1-62708-241-9
... Experimental Procedure Introduction Results and Discussion Non-Destructive Testing Metallographic Analysis Mechanical Testing Chemical Analysis Conclusion Stress Analysis Fractographic Analysis Visual inspection of the primary fracture surfaces (denoted as A and B) revealed both...