A Reaction-Rate Treatment of the Life Fraction Hypothesis in Creep TestingSource: Journal of Fluids Engineering:;1969:;volume( 091 ):;issue: 001::page 56Author:M. Grounes
DOI: 10.1115/1.3571027Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The equation describing Robinson’s life fraction hypothesis has been derived from a generalized equation based on chemical reaction-rate theory. It is shown what further assumptions are needed in order to make this hypothesis valid. For design considerations the following equation is suggested j=1mtjtaj≤k where tj = time spent at Tj , σj ; taj = time needed to rupture, etc., at Tj , σj ; k = empirical parameter, smaller than 1. The selection of a numerical value for k is based on an analysis of how conventional creep data comply with various assumptions made in the derivation of the equation; T = temperature; and σ = stress.
keyword(s): Creep , Testing , Equations , Rupture , Temperature , Stress AND Design ,
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| contributor author | M. Grounes | |
| date accessioned | 2017-05-09T00:22:35Z | |
| date available | 2017-05-09T00:22:35Z | |
| date copyright | March, 1969 | |
| date issued | 1969 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-27327#56_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/135156 | |
| description abstract | The equation describing Robinson’s life fraction hypothesis has been derived from a generalized equation based on chemical reaction-rate theory. It is shown what further assumptions are needed in order to make this hypothesis valid. For design considerations the following equation is suggested j=1mtjtaj≤k where tj = time spent at Tj , σj ; taj = time needed to rupture, etc., at Tj , σj ; k = empirical parameter, smaller than 1. The selection of a numerical value for k is based on an analysis of how conventional creep data comply with various assumptions made in the derivation of the equation; T = temperature; and σ = stress. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | A Reaction-Rate Treatment of the Life Fraction Hypothesis in Creep Testing | |
| type | Journal Paper | |
| journal volume | 91 | |
| journal issue | 1 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.3571027 | |
| journal fristpage | 56 | |
| journal lastpage | 58 | |
| identifier eissn | 1528-901X | |
| keywords | Creep | |
| keywords | Testing | |
| keywords | Equations | |
| keywords | Rupture | |
| keywords | Temperature | |
| keywords | Stress AND Design | |
| tree | Journal of Fluids Engineering:;1969:;volume( 091 ):;issue: 001 | |
| contenttype | Fulltext |