Effects of Thermal Loading on Foil and Sheet Composites With Constituents of Differing Thermal ExpansivitiesSource: Journal of Engineering Materials and Technology:;1973:;volume( 095 ):;issue: 001::page 47Author:C. A. Hoffman
DOI: 10.1115/1.3443105Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A study was made to estimate the magnitudes of elastic stresses and elastic-plastic stresses and strains in sheet or foil laminar composites. Using a model tungsten/80Ni + 20Cr laminar composite and assuming cooling or heating through a temperature range of 80–2000 deg F (26.5–1093.5 deg C), calculated elastic stresses exceeded published or estimated strengths of the constituents. Elastic-plastic stress-strain solutions resulted in lower estimated stress levels but with the concomitant occurrence of sufficiently large strain ranges to suggest possible thermal fatigue problems. Limited experimental studies using tungsten/80Ni + 20Cr foil and sheet laminar composites, slowly cycled between 80 and 2000 deg F (26.5–1093.5 deg C) or rapidly cycled between 80 and 1600 deg F (26.5–871 deg C) produced varying degrees of observable structural damage in from 1 to 11 cycles depending upon temperature transition rate and laminae thickness; these particular results might not occur with other combinations of materials.
keyword(s): Composite materials , Stress , Temperature , Tungsten , Heating , Cooling , Cycles , Thickness AND Fatigue ,
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contributor author | C. A. Hoffman | |
date accessioned | 2017-05-09T01:36:29Z | |
date available | 2017-05-09T01:36:29Z | |
date copyright | January, 1973 | |
date issued | 1973 | |
identifier issn | 0094-4289 | |
identifier other | JEMTA8-26831#47_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/163845 | |
description abstract | A study was made to estimate the magnitudes of elastic stresses and elastic-plastic stresses and strains in sheet or foil laminar composites. Using a model tungsten/80Ni + 20Cr laminar composite and assuming cooling or heating through a temperature range of 80–2000 deg F (26.5–1093.5 deg C), calculated elastic stresses exceeded published or estimated strengths of the constituents. Elastic-plastic stress-strain solutions resulted in lower estimated stress levels but with the concomitant occurrence of sufficiently large strain ranges to suggest possible thermal fatigue problems. Limited experimental studies using tungsten/80Ni + 20Cr foil and sheet laminar composites, slowly cycled between 80 and 2000 deg F (26.5–1093.5 deg C) or rapidly cycled between 80 and 1600 deg F (26.5–871 deg C) produced varying degrees of observable structural damage in from 1 to 11 cycles depending upon temperature transition rate and laminae thickness; these particular results might not occur with other combinations of materials. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Effects of Thermal Loading on Foil and Sheet Composites With Constituents of Differing Thermal Expansivities | |
type | Journal Paper | |
journal volume | 95 | |
journal issue | 1 | |
journal title | Journal of Engineering Materials and Technology | |
identifier doi | 10.1115/1.3443105 | |
journal fristpage | 47 | |
journal lastpage | 54 | |
identifier eissn | 1528-8889 | |
keywords | Composite materials | |
keywords | Stress | |
keywords | Temperature | |
keywords | Tungsten | |
keywords | Heating | |
keywords | Cooling | |
keywords | Cycles | |
keywords | Thickness AND Fatigue | |
tree | Journal of Engineering Materials and Technology:;1973:;volume( 095 ):;issue: 001 | |
contenttype | Fulltext |