Abstract
Continuum Damage Mechanics (CDM) approach is used to predict crack initiation life and Fracture Mechanics approach predicts crack growth life. Strain controlled fatigue life of a ferrous alloy, EN 19 steel, has been determined using CDM and Fracture Mechanics approach. By combining these two approaches, life could be predicted with damage value in the material. All inputs required for the models have been determined by conducting monotonic, cyclic and fracture tests. Predicted life is also compared by conducting strain controlled fatigue tests. Predicted life in the strain amplitude range of 0.3-0.7% (fatigue life range of 102-105), compares well with the experimental results. All tests have been conducted at specimen level, stress ratio of -1 and at room temperature. The variation of crack initiation and crack propagation life with strain amplitude shows that maximum life is consumed by crack growth process at higher strain amplitude and at lower strain amplitudes, maximum life is spent for crack initiation process.
| Original language | English |
|---|---|
| Pages (from-to) | 220-224 |
| Number of pages | 5 |
| Journal | Materials and Design |
| Volume | 35 |
| DOIs | |
| Publication status | Published - 01-03-2012 |
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All Science Journal Classification (ASJC) codes
- Mechanical Engineering
- Mechanics of Materials
- Materials Science(all)
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Fatigue life prediction : A Continuum Damage Mechanics and Fracture Mechanics approach. / Upadhyaya, Y. S.; Sridhara, B. K.
In: Materials and Design, Vol. 35, 01.03.2012, p. 220-224.Research output: Contribution to journal › Article
TY - JOUR
T1 - Fatigue life prediction
T2 - A Continuum Damage Mechanics and Fracture Mechanics approach
AU - Upadhyaya, Y. S.
AU - Sridhara, B. K.
PY - 2012/3/1
Y1 - 2012/3/1
N2 - Continuum Damage Mechanics (CDM) approach is used to predict crack initiation life and Fracture Mechanics approach predicts crack growth life. Strain controlled fatigue life of a ferrous alloy, EN 19 steel, has been determined using CDM and Fracture Mechanics approach. By combining these two approaches, life could be predicted with damage value in the material. All inputs required for the models have been determined by conducting monotonic, cyclic and fracture tests. Predicted life is also compared by conducting strain controlled fatigue tests. Predicted life in the strain amplitude range of 0.3-0.7% (fatigue life range of 102-105), compares well with the experimental results. All tests have been conducted at specimen level, stress ratio of -1 and at room temperature. The variation of crack initiation and crack propagation life with strain amplitude shows that maximum life is consumed by crack growth process at higher strain amplitude and at lower strain amplitudes, maximum life is spent for crack initiation process.
AB - Continuum Damage Mechanics (CDM) approach is used to predict crack initiation life and Fracture Mechanics approach predicts crack growth life. Strain controlled fatigue life of a ferrous alloy, EN 19 steel, has been determined using CDM and Fracture Mechanics approach. By combining these two approaches, life could be predicted with damage value in the material. All inputs required for the models have been determined by conducting monotonic, cyclic and fracture tests. Predicted life is also compared by conducting strain controlled fatigue tests. Predicted life in the strain amplitude range of 0.3-0.7% (fatigue life range of 102-105), compares well with the experimental results. All tests have been conducted at specimen level, stress ratio of -1 and at room temperature. The variation of crack initiation and crack propagation life with strain amplitude shows that maximum life is consumed by crack growth process at higher strain amplitude and at lower strain amplitudes, maximum life is spent for crack initiation process.
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U2 - 10.1016/j.matdes.2011.09.049
DO - 10.1016/j.matdes.2011.09.049
M3 - Article
VL - 35
SP - 220
EP - 224
JO - Materials and Design
JF - Materials and Design
SN - 0264-1275
ER -