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Grips

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0090427
EISBN: 978-1-62708-222-8
...Abstract Abstract A set of plastic grips from an electric consumer product failed while in service. The grips had been injection molded from a general-purpose grade of ABS resin. The parts had cracked while in use after apparent embrittlement of the material. Investigation (visual inspection...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089256
EISBN: 978-1-62708-235-8
...Abstract Abstract Alloy steel forgings used as structural members of a ski chair lift grip mechanism were identified to have contained forging laps (i.e., sharp-notched discontinuities) during an annual magnetic particle inspection of all chair lift grip structural members at a mountain resort...
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
... susceptible direction that must be considered of primary importance in material selection for design configuration. A Navy UH-1N helicopter main rotor blade grip manufactured from a 2014-T6 aluminum alloy forging failed because of a design flaw that left a high residual tensile stress along the short...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0047158
EISBN: 978-1-62708-226-6
...Abstract Abstract The pointed ends of several stainless steel forceps split or completely fractured where split portions broke off. All the forceps were delivered in the same lot. The pointed ends of the forceps are used for probing and gripping very small objects and must be true, sound...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001278
EISBN: 978-1-62708-215-0
...Abstract Abstract Metal-framed polycarbonate (PC) ophthalmic lenses shattered from acetone solvent-induced cracking. The lenses exhibited primary and secondary cracks with solvent swelling and crazing. A laboratory accident splashed acetone onto the lenses. The metal frames gripped...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001228
EISBN: 978-1-62708-229-7
.... They were milled blades without binding wires and cover band. They did not fracture at the fastening, i.e. the location of highest bending stress, but in a central region which was 165 to 225 mm away from the gripped end. The blades were fabricated from a stainless heat-treatable chromium steel containing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001170
EISBN: 978-1-62708-225-9
... radially in one of four places in which the cross section was weakened by short grooves that served as tool grips for tightening the cover. The fracture propagated from the base of the thread and followed it in a circumferential direction until it was broken through radially at the top across the ring due...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001649
EISBN: 978-1-62708-234-1
... and washers with the holes of origin. Fastener grip lengths and washer thickness are selected in the design process to provide optimal properties. A shift up or down in grip length can result in improper installations such as excessive stress concentrations (grip length too long, deformation concentrated...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001784
EISBN: 978-1-62708-241-9
... at the thinnest grip wall section of the flat surface inside socket drum as shown in Figs. 1a , b and 2 . Geometry of the hexagonal grip may help a better screw grip, but it adds regions with high stress concentration that are vulnerable to failure [ 1 ]. Fig. 1 ( a , b ) Fractured wrench socket...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001284
EISBN: 978-1-62708-215-0
... had fractured at the thumb position on the riser grip. Figure 1 shows the stock riser and a broken riser. Examination of both sides of the grip revealed surface flow lines visibly present at the thumb position ( Fig. 2 ). Flow lines can be an indication of cold shuts, which result when two...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003525
EISBN: 978-1-62708-180-1
... to diphenyl carbonate Fig. 15 Scanning electron image showing isolated degradation of the grip material. 30× Fig. 16 The FTIR spectrum obtained on the grip surface. The spectrum contains absorption bands indicative of glyceride derivatives of fats and oils in addition to bands associated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001634
EISBN: 978-1-62708-221-1
... layers of reinforcement wire on the failed end had experienced extensive corrosion, corroding away completely in most areas ( Fig. 2 ). This corrosion was fairly uniform around the circumference of the hose. The corrosion occurred underneath the gripping “fingers” in the area where the case had been...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001244
EISBN: 978-1-62708-224-2
.... 4 these zones were cold deformed and had partly recrystallized into coarse grains in the center under the notches. These narrow, thoroughly deformed areas could only have been caused by shear or torsion with short gripping length. Torsion marks could also be observed externally at the surfaces...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001814
EISBN: 978-1-62708-180-1
... at the surface and a back-tempered region beneath it caused by frictional heat. Etched with 3% nital. 295× Fig. 44 Two shear knives made from AISI H13 tool steel. The knives were used to grip hot-rolled bars after rolling so that they could be separated. The knives failed by spalling of the gripping...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001093
EISBN: 978-1-62708-214-3
...-treated, cadmium-plated AISI 8740 steel bolt broke through the head-to-shank fillet while being handled during assembly. Pertinent Specifications Dimensions of the alloy steel bolt (MSD 21250-10070) were 15.9 mm (0.625 in.) diam, 111 mm (4.375 in.) grip length, and 134.5 mm (5.294 in.) overall...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001519
EISBN: 978-1-62708-223-5
... the collet inward against the tapered sleeve, causing the collet jaws to grip the workpiece. The fracture surface on the draw-in bolt displayed “oyster shell” marks resembling crack growth bands ( Fig. 2 ). Such marks have been known to represent slight alternate changes in the plane of crack propagation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0089534
EISBN: 978-1-62708-223-5
... that had fractured were submitted for laboratory examination. The jaws were implemented to stretch the wire used in prestressed concrete beams. The wire was gripped at one end of the stretching machine between stationary semicylindrical jaws and at the other end between movable wedge-shaped jaws that were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0047694
EISBN: 978-1-62708-219-8
...-treatment temperatures showed that the wire exceeded 775 °C (1425 °F) at a point 305 cm (12 in.) from the weld area. Metallographic examination revealed that there was martensite present in the weld area even after the heat treatment. The wrap test was being poorly applied, with the wire and mandrel gripped...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001151
EISBN: 978-1-62708-219-8
... of each 30cm length of angle iron to allow for gripping in the tensile test machine. Each spliced angle iron contained a splice bar for reinforcement. In some cases, both angle irons and their common splice bar were test simultaneously. (Note in Fig. 3 that the trusses are constructed using a pair...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
.... Depending on the criticality, periodic field inspection may be required and may reveal defects not previously identified. A case study of one such occurrence illustrates the effectiveness of a maintenance plan that includes periodic inspection. Example 3: Forging Laps in Ski Chair Lift Grip Components...