Simplified Estimation of Creep-Rupture Strength for Notched Tensile Specimens of Austenitic Stainless SteelsSource: Journal of Pressure Vessel Technology:;1988:;volume( 110 ):;issue: 003::page 314Author:H. J. Konish
DOI: 10.1115/1.3265605Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A method for characterizing the creep-rupture strength of notched tensile specimens subjected to constant membrane loading has been developed. This method resolves the apparent contradiction between notch-strengthening and notch-weakening by employing the average von Mises equivalent stress on the net section of a notched specimen as its true rupture strength. The nominal net section equivalent stress can be determined by elastic analysis. Seven different notched specimen geometries of 304 and 316 stainless steel, assessed by this approach, exhibit varying degrees of notch-weakening at test temperatures from 1000°F (538°C) to 1500°F (816°C). The extent of notch-weakening is slightly dependent on specimen material and test temperature but the principal factor appears to be the degree to which the notch constrains inelastic flow on the net section. The effects of notch constraint on notch-weakening are well characterized by the peak stress triaxiality factor.
keyword(s): Creep , Rupture , Stainless steel , Stress , Temperature , Membranes , Elastic analysis AND Flow (Dynamics) ,
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| contributor author | H. J. Konish | |
| date accessioned | 2017-05-08T23:27:59Z | |
| date available | 2017-05-08T23:27:59Z | |
| date copyright | August, 1988 | |
| date issued | 1988 | |
| identifier issn | 0094-9930 | |
| identifier other | JPVTAS-28303#314_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/104358 | |
| description abstract | A method for characterizing the creep-rupture strength of notched tensile specimens subjected to constant membrane loading has been developed. This method resolves the apparent contradiction between notch-strengthening and notch-weakening by employing the average von Mises equivalent stress on the net section of a notched specimen as its true rupture strength. The nominal net section equivalent stress can be determined by elastic analysis. Seven different notched specimen geometries of 304 and 316 stainless steel, assessed by this approach, exhibit varying degrees of notch-weakening at test temperatures from 1000°F (538°C) to 1500°F (816°C). The extent of notch-weakening is slightly dependent on specimen material and test temperature but the principal factor appears to be the degree to which the notch constrains inelastic flow on the net section. The effects of notch constraint on notch-weakening are well characterized by the peak stress triaxiality factor. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Simplified Estimation of Creep-Rupture Strength for Notched Tensile Specimens of Austenitic Stainless Steels | |
| type | Journal Paper | |
| journal volume | 110 | |
| journal issue | 3 | |
| journal title | Journal of Pressure Vessel Technology | |
| identifier doi | 10.1115/1.3265605 | |
| journal fristpage | 314 | |
| journal lastpage | 321 | |
| identifier eissn | 1528-8978 | |
| keywords | Creep | |
| keywords | Rupture | |
| keywords | Stainless steel | |
| keywords | Stress | |
| keywords | Temperature | |
| keywords | Membranes | |
| keywords | Elastic analysis AND Flow (Dynamics) | |
| tree | Journal of Pressure Vessel Technology:;1988:;volume( 110 ):;issue: 003 | |
| contenttype | Fulltext |