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liquid penetrant inspection

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089459
EISBN: 978-1-62708-235-8
... the typical appearance of brittle fracture, exhibiting little or no evidence of plastic deformation. The four rods were checked for the presence of imperfections in the general vicinity of rough-ground areas, using liquid-penetrant inspection. This examination revealed an incipient crack 9.5 mm...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047165
EISBN: 978-1-62708-217-4
...: Liquid penetrant inspect the entire wheel half Polish surface at known crack indication. Etch and liquid penetrant inspect as needed to ensure that the crack indication is removed Chemically treat repaired area in preparation for painting, then paint In initial liquid-penetrant inspection...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0091617
EISBN: 978-1-62708-220-4
.... Investigation (visual inspection, 10x unetched images, liquid-penetrant inspection, and chemical analysis of the insulation) supported the conclusion that the failure occurred in the area of the flange-to-cone weld by SCC as the result of aqueous chlorides leached from the insulation around the liner...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089738
EISBN: 978-1-62708-235-8
...Abstract Abstract While undergoing vibration testing, a type 347 stainless steel inlet header for a fuel-to-air heat exchanger cracked in the header tube adjacent to the weld bead between the tube and header duct. Investigation (visual inspection and liquid penetrant inspection) supported...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046252
EISBN: 978-1-62708-229-7
...). Cracking occurred in welded joints and in unwelded portions of the bellows. The bellows were made by forming the convolution halves from stainless steel sheet, then welding the convolutions together. Evidence from visual examination, liquid penetrant inspection chemical analysis, hardness tests...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047749
EISBN: 978-1-62708-235-8
...Abstract Abstract A type 321 stainless steel (AMS 5570) pressure-tube assembly that contained a brazed reinforcing liner leaked during a pressure test. Fluorescent liquid-penetrant inspection revealed a circumferential crack extended approximately 180 deg around the tube parallel to the fillet...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046022
EISBN: 978-1-62708-217-4
... liquid-penetrant inspection before anodizing, because chromic acid destroys the penetrant. This inspection would reduce the possibility of cracked parts being used in service. Anodizing Cracking (fracturing) Forgings Straightening 2014-T6 UNS A92014 (Other, general, or unspecified) fracture...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
...-particle inspection, liquid penetrant inspection, and eddy-current testing. The major NDE methods for internal (volumetric) inspection in failure analysis also are described. References References 1. Becker W.T. , Shipley R.J. , and Aliya D.A. , Use of the Term Defect , J. Fail...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c9001568
EISBN: 978-1-62708-230-3
... white water (pH approximately 4.7) containing chlorides (45 ppm). Visual and liquid penetrant inspections of the rolls revealed extensive cracking at the roll inside surface. The cracks penetrated more than 30 percent of the wall thickness and a few cracks were several inches long. The cracks were...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001085
EISBN: 978-1-62708-214-3
...Abstract Abstract Liquid penetrant inspection of an ASTM A296 grade CA-15 residual heat removal pump impeller from a nuclear plant revealed a crack like indication that approximated the outer contour of the wear ring. Examination of a section containing the crack and three sections from near...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c9001562
EISBN: 978-1-62708-230-3
... concentrations at 2 grams per liter. The operating pressures in the inlet cone were up to 1.2 MN/sq m (170 psig). The inlet cone had developed leaks within a year of service. Liquid penetrant inspection showed significant through-wall cracking near the fillet welds joining the bottom flange and side wall...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c9001565
EISBN: 978-1-62708-230-3
... was 190 deg C (375 deg F) and the solution contained approximately 700 ppm chlorides. Liquid penetrant inspection of the pipeline showed the leaks were numerous and confined adjacent to the welds. A metallographic specimen from the circumferential weld showed the cracks initiated at the inside surface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0047681
EISBN: 978-1-62708-229-7
...Abstract Abstract A fluorescent liquid-penetrant inspection of an experimental stator vane of a first-stage axial compressor revealed the presence of a longitudinal crack over 50 mm (2 in.) long at the edge of a resistance seam weld. The vane was made of titanium alloy Ti-6Al-4V (AMS 4911...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0047586
EISBN: 978-1-62708-236-5
...Abstract Abstract A fuel-nozzle-support assembly showed transverse indications after fluorescent liquid-penetrant inspection of a repair-welded area at a fillet on the front side of the support neck adjacent to the mounting flange. Visual examination disclosed an irregular crack. The crack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047632
EISBN: 978-1-62708-235-8
... and maintained at 205 ° C (400 °F) with a torch, and was subsequently liquid penetrant inspected. After a second anneal, a port fitting for the dome opening was attached by four tack welds. The assembly was torch preheated to 120 to 150 °C (250 to 300 °F) using a contact pyrometer to check the temperature...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001268
EISBN: 978-1-62708-215-0
... with specification AMS 5596. This specification requires components to he heat-treated to 1035 MPa (150 ksi) minimum yield strength, 1240 MPa (180 ksi) minimum ultimate tensile strength, 12% minimum elongation, and a hardness of 38 to 44 HRC. A 100% liquid penetrant inspection is performed in accordance with MIL-STD...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0060104
EISBN: 978-1-62708-220-4
... the tube-side fluid was contaminated liquid methylene chloride. More than 100 tubes exhibiting severe outer surface pitting and cracklike indications near each tube sheet were revealed during eddy current inspection. It was observed that the indications correlated with rust-stained, pitted, and cracked...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001081
EISBN: 978-1-62708-214-3
...—liquid penetrant inspection. Fig. 1 Compressor disk. In some engines, such as those considered in this case study, the cyclic lifetimes of critical components may he based on a dysfunction criterion, where either 1 in 1000 or 1 in 741 components will initiate and propagate a crack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047602
EISBN: 978-1-62708-235-8
... on the fixture surface and that this could have penetrated the stainless steel in the presence of tensile thermal-contraction stresses. The cracks in the weldments were a form of liquid-metal embrittlement caused by contact with superficially melted copper from the fixture and subsequent grain-boundary attack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0060154
EISBN: 978-1-62708-234-1
... was based on results from both visual and liquid penetrant inspections of the outer surface of the header. The inner surface, where accessible, was also checked visually and by liquid penetrant inspection. The six other headers were inspected at selected locations, and no surface cracks were detected...