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coefficient of thermal expansion

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Published: 15 May 2022
Fig. 22 Thermal analysis of oriented plastic. CTE, coefficient of thermal expansion More
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Published: 15 May 2022
Fig. 21 Effect of glass addition on coefficient of thermal expansion. PBT, polybutylene terephthalate; PC, polycarbonate More
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006932
EISBN: 978-1-62708-395-9
... a consequence of high coefficients of thermal expansion and low thermal diffusivities. Although time-consuming techniques can be used to analyze thermal stresses, several useful qualitative tests are described in this article. The classification of internal stresses in plastic parts is covered. The article...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001593
EISBN: 978-1-62708-234-1
... in coefficients of thermal expansion between the polysulfone and the mating steel insert. Coefficient of thermal expansion Insert molding Plastic Polysulfone Brittle fracture Introduction A flow sensor was submitted for analysis because the plastic body section had failed while in service...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0048772
EISBN: 978-1-62708-220-4
... through the fireside edge of the fracture surface. Scale was observed over most of the crack path which acted as a stress raiser. The effect of the oxide was magnified during thermal cycles because of differential thermal expansion, with the steel having a greater expansion coefficient than the scale...
Image
Published: 15 May 2022
Fig. 19 Idealized thermomechanical analysis curve in the expansion mode. α, coefficient of thermal expansion; T g , glass transition temperature. Source: Ref 7 More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001811
EISBN: 978-1-62708-241-9
... coefficient of thermal expansion 28Cr3SiNiWMoV (chromium hot-worked steel) Introduction The increase in temperature increases the thermal vibration pushing the atoms apart, increasing their mean spacing, and causing thermal expansion ( α ). Perhaps the most important physical property of steel...
Image
Published: 01 June 2019
Fig. 5 TMA plot overlay showing the differential in the coefficients of thermal expansion between the plastic collar material and the steel insert More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001570
EISBN: 978-1-62708-220-4
... be aggravated due to the lack of isotropy of titanium, which has a hexagonal crystal structure 3 . The difference in the thermal expansion coefficient of carbon steel and titanium might have played an important part in the loosening of the joint. The thermal expansion coefficient of carbon steel is over 30...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006923
EISBN: 978-1-62708-395-9
... Coefficient of thermal expansion, 10 −6 /°C °C °F °C °F W/m · K Btu/ft · h · °F Acrylonitrile-butadiene-styrene (ABS) 99 210 60 140 0.27 0.16 53 ABS-polycarbonate alloy (ABS-PC) 115 240 60 140 0.25 0.14 35 Diallyl phthalate (DAP) 285 545 130 265 0.36 0.21 27...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
... 3 Module of elasticity 170 GPa Poisson’s ratio 0.31 Thermal expansion 14 E-6/°C Thermal conductivity 90.7 J/m °C Thermal capacity 444 J/kg °C The displacement boundary conditions were two types. First, the common practice of bolting the mould to a steel frame carrier...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0006548
EISBN: 978-1-62708-180-1
... opening displacements COV coefficient of variation CPSC Consumer Product Safety Commission CTE coefficient of thermal expansion CTOD crack-tip opening displacement CVD chemical vapor deposition CVN Charpy V-notch (impact test or speci- men) d depth; diameter da/dN fatigue crack growth rate da/dt crack...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001110
EISBN: 978-1-62708-214-3
... of the steam-air mixture. Conclusion and Recommendations Most Probable Cause Both fractographic and metallographic features revealed that failure was by thermal fatigue caused by the presence of biaxial thermal stresses on the inner surface of the tube. Because of their higher coefficient of thermal...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
...-corrosion cracking (SCC) and hydrogen damage; fracture, including fatigue fracture, thermal fatigue fracture, and stress rupture; and distortion, especially distortion involving thermal-expansion effects or creep. The causes of failure can generally be classified as design defects; fabrication defects...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0090451
EISBN: 978-1-62708-218-1
... in excess of the stated drying temperature. Further analysis of the assembly materials using thermomechanical analysis (TMA) produced significantly different results for the PET jacket and the steel housing material. Determination of the coefficients of thermal expansion (CTEs) showed approximately...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006869
EISBN: 978-1-62708-395-9
.... In addition to poor thermal conductivity, the higher thermal expansion coefficients of polymers (10 times greater than those of metals) and strong creeping tendency create problems related to dimensional clearances and stiffness. Polymers show poor compressive strengths (approximately 30 times less) compared...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006825
EISBN: 978-1-62708-329-4
...), increases in inside-diameter scale thickness, or decreases in steam-side heat-transfer coefficient caused by reduced flow will lead to tube metal temperature increases. Table 4 lists the range of values for heat-transfer coefficients and thermal-conductivity values for internal deposits. Heat...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001358
EISBN: 978-1-62708-215-0
... defects, caused by either no filler metal or lack of penetration, also led to fatigue cracking. The weld HAZs contained high residual stresses because of: Difference in coefficients of thermal expansion between the base metal (martensitic) and the weld metal (austenitic) Improper postweld heat...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001668
EISBN: 978-1-62708-232-7
... checked after the accident and found to be fully operational. If a runaway temperature condition occurred, both vessels should have responded similarly. This did not occur. A check was made on the differences in the thermal coefficients of expansion between the autoclave and bolt material...