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differential temperature analysis

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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
... utilized included scanning electron microscopy, Fourier transform infrared spectroscopy, differential scanning calorimetry, thermomechanical analysis, and melt flow rate determination. It was the conclusion of the investigation that the part failed via brittle fracture, with evidence also indicating low...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001901
EISBN: 978-1-62708-218-1
... Abstract Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to analyze an automotive polyoxymethylene (POM) sensor housing that was depolymerizing during service. It was found that a combination of heat, oxygen, and sulfuric acid attacked and caused premature...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006931
EISBN: 978-1-62708-395-9
..., viscosity average molecular weight Quasi-elastic light scattering (QELS) Macromolecular particle diameter, diffusion coefficient Particle size in dilute dispersions, molecular aggregation Differential thermal analysis (DTA) Glass transition temperatures, T g ; melt/crystallization temperatures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046972
EISBN: 978-1-62708-217-4
... with the surface. However, this improvement would be more costly than applying a protective coating. Selected References Selected References • Benac D.J. and Swaminathan V.P. , Elevated-Temperature Life Assessment for Turbine Components, Piping, and Tubing , Failure Analysis and Prevention...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006933
EISBN: 978-1-62708-395-9
... identification, contamination, degradation, chemical contact Differential scanning calorimetry (DSC) Heat of fusion, melting point, glass transition temperature, heat capacity Material identification, level of crystallinity, aging/degradation, thermal history Thermogravimetric analysis (TGA) Weight loss...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006945
EISBN: 978-1-62708-395-9
... for assembly design for manufacturing and assembly diglycidyl ether of bisphenol A digital image correlation dynamic key curve dynamic mechanical analysis degree of freedom dioctyl phthalate differential scanning calorimetry differential thermal analysis de ection temperature under load drop weight index poly...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006924
EISBN: 978-1-62708-395-9
... Fig. 48 Tensile stress-strain curves for typical plastics Fig. 49 Loading geometry for ASTM D648 heat-deflection temperature test Abstract This article discusses the most common thermal analysis methods for thermosetting resins. These include differential scanning calorimetry...
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
... at concentrations below 5% (Ref 4 ). Fig. 5 Differential scanning calorimetry thermogram showing various transitions associated with polymeric materials. The (I) indicates that the numerical temperature was determined as the inflection point on the curve. Method Sample preparation for DSC analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0047321
EISBN: 978-1-62708-224-2
... at a temperature differential of up to 555 deg C (1000 deg F). With the adoption of this procedure, brake drums failed by wear only. Alignment Clearances Diameters Sand castings Spacers Winches Ductile iron Brittle fracture A 58.4-cm (23-in.) diam heavy-duty brake drum that was a component...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0091475
EISBN: 978-1-62708-225-9
... Abstract A type 431 stainless steel mushroom-head closure fractured in service at a hydrogen pressure of 3000 atm. Fracture occurred at room temperature after miscellaneous chemical service that included exposures to hydrogen at temperatures from ambient to 350 deg C (662 deg F). Investigation...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001798
EISBN: 978-1-62708-241-9
... to determine the cause. The investigation included fault-tree analysis, FTIR and EDX spectroscopy, and differential scanning calorimetry with thermogravimetric analysis. Based on test data, the epoxy resin had not been properly cured and was hydrolyzed in its compromised state because of humidity. Hence...
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
..., Annual Book of ASTM Standards , ASTM International 40. “ Standard Test Method for Transition Temperatures of Polymers by Thermal Analysis ,” D 3418, Annual Book of ASTM Standards , ASTM International Differential Scanning Calorimetry Thermomechanical Testing Thermogravimetric Analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001162
EISBN: 978-1-62708-220-4
... be differentiated. The sections were therefore examined unetched in polarized light. The microstructure of the cracked tubes was shown to have much smaller grains than the ductile and showed cracks from the surface down along the grain boundaries. Material hardness also differed between the unusable tubes...
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
... growth rate DBTT ductile-to-ductile transition tempera- ture diam diameter DIN Deutsche Industrie-Normen DMA dynamic mechanical analysis DoD Department of Defense DPFAD deformation plasticity failure assess- ment diagram DSC differential scanning calorimetry DTA differential thermal analysis E Young s...
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
... PET 18 151 305 130 265 T g 40 0.7 517 960 28.3 (a) PVC, polyvinyl chloride; ABS, acrylonitrile-butadiene-styrene; PET, polyethylene terephthalate. (b) DSC, differential scanning calorimetry. (c) TMA, thermomechanical analysis. (d) T g , glass transition temperature...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0090445
EISBN: 978-1-62708-222-8
...), indicative of a PBT resin. The failed cover material was also analyzed using TGA in order to assess the level of the contamination. The TGA analysis was performed using high-resolution temperature programming, and the results revealed adequate separation of the ABS and PBT resins. Based on the results...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001011
EISBN: 978-1-62708-229-7
... of high temperature oxide suggests that the design metal temperature (543°C) was exceeded in a section of the superheater outlet tubes. Whether this was due to steam flow restriction or to differential heating of the superheater due to preferential hot gas flow is not known. Because steam temperature...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... exceeded the strength of the part Possible wrong material (check for proper alloy and processing by hardness check or destructive testing, chemical analysis) Loading direction may show failure was secondary Short-term, high-temperature, high-stress rupture has ductile appearance (see creep...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003521
EISBN: 978-1-62708-180-1
... Contributing factors Load exceeded the strength of the part. Check for proper alloy and processing by hardness check or destructive testing, chemical analysis. Loading direction may show failure was secondary. Short-term, high-temperature, high-stress rupture has ductile appearance (see creep...