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Published: 15 May 2022
Fig. 14 G’ of polyvinyl chloride blends; MW A = 58 × 10 4 ; MW B = 5.9 × 10 4 More
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Published: 15 May 2022
Fig. 27 Differential scanning calorimetry of polyethylene/polypropylene blend 10 mcal/s range; 20 °C/min (36 °F/min). PE, polyethylene; PP, polypropylene. Source: Ref 38 More
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Published: 15 May 2022
Fig. 30 Thermogravimetric analysis of acetal/fluorocarbon blend; 40 °C/min (70 °F/min) in air. PTFE, polytetrafluoroethylene. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0090448
EISBN: 978-1-62708-222-8
... Abstract Housings (being tested as part of a material conversion) from an electrical appliance failed during an engineering evaluation. They had been injection molded from a commercial polycarbonate/PET blend. Parts produced from the previous material, a nylon 6/6 resin, had consistently passed...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001318
EISBN: 978-1-62708-215-0
.... The mercury was accidentally introduced into the cylinders during a gas-blending operation through a contaminated blending manifold. Replacement of the contaminated manifold was recommended along with discontinued use of mercury manometers, the original source of mercury contamination. Brittle fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0092101
EISBN: 978-1-62708-234-1
... Abstract An antifriction bearing made from a nylon/ polyethylene blend failed. The bearing came into contact with a steel shaft. Investigation (visual inspection and 417X images) supported the conclusion that movement of the shaft against the bearing caused abrasion due to fine iron oxide...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091727
EISBN: 978-1-62708-217-4
.... This acceptance test had been run 38 times on similar pressure vessels without problems. The methanol was a safe-fluid replacement for the storable hypergolic fuels (blend of 50% hydrazine and 50% unsymmetrical dimethyl hydrazine). Investigation (visual inspection and 65X images) showed similarities to stress...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001438
EISBN: 978-1-62708-224-2
... a deposit of weld metal had been made, probably to eliminate a surface defect but apparently, without complete removal of the defect down to sound metal prior to welding. On many occasions it is preferable to blend out surface defects by local dressing. The effect of the resulting loss of strength...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006849
EISBN: 978-1-62708-395-9
... Abstract This article addresses some established protocols for characterizing thermoplastics and whether they are homogeneous resins, alloyed, or blended compositions or highly modified thermoplastic composites. It begins with a discussion on characterizing mechanical, rheological, and thermal...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006910
EISBN: 978-1-62708-395-9
... Abstract There are many different types of polymeric materials, ranging from glassy to semicrystalline polymers and even blends. Their mechanical properties range from pure elastic with very high strains to fracture (elastomers) to almost pure linear elastic (Hookian behavior) with low strains...
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Published: 01 December 1993
Fig. 13 EDS spectrum obtained from deposits on the cylinder side of a disc exposed to the hydrogen/ethylene blend. More
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Published: 01 December 1993
Fig. 3 SEM micrograph showing surface deposits on the cylinder side of a disc exposed to hydrogen/ethylene blend. 271× More
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Published: 30 August 2021
Fig. 12 One-half of wheelset showing journal fillet (blue arrow), backing ring blend radius (white arrow), cartridge bearing, and end cap (at left) More
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Published: 01 December 1993
Fig. 6 Fracture through crack shown in Fig. 4 , showing dark, discolored fracture path. Initiation appears to be from multiple sites along the vane-to-hub blend radius. 4× More
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Published: 15 May 2022
Fig. 6 Differential scanning calorimetry thermogram of polyethylene/polypropylene blend, 10 mcal/s range, 20 °C/min (36 °F/min) heating rate. PE, polyethylene; PP, polypropylene. Source: Ref 54 More
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006915
EISBN: 978-1-62708-395-9
... are no longer present. However, the lack of shorter polymer chains increases melt viscosity to such a degree that processing problems are often encountered. The use of blends of high- and low-MW LLDPE generates a bimodal MWD that produces a balance of good strength and ease of processing. Chain branching...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001366
EISBN: 978-1-62708-215-0
... of intergranular propagation ( Fig. 6 and 7 ); fractures exhibited progressive features. Initiation areas were along vane-to-hub blend radii approximately 1.6 mm ( 1 16 in.) from vane leading edges on the concave sides of vanes and on the convex airfoil sides of vanes in the vicinity of trailing edges...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006939
EISBN: 978-1-62708-395-9
... resistant to scratching compared to metals. Low-molecular-weight-filled materials can be used to prevent scratching of polymers or polymer composites. Some common compounds used as antiscratch additives are modified silanes or complex blends of polymers and amides. Common applications for antiscratch...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048356
EISBN: 978-1-62708-229-7
..., and the attachment welds were blended smoothly into the tube surfaces for the entire length of the dust bin. No further failures occurred after the severe undercut was eliminated. Selected Reference Selected Reference • Fatigue Failures , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0047813
EISBN: 978-1-62708-229-7
... inspection was performed to ensure soundness of the metal in the older section. The repaired shaft was machined to provide a taper between the two diameters, rather than reproduce the sharp change in diameter in the original design. The taper section was carefully blended with the smaller diameter so...