✦ LIBER ✦
J-integral evaluation in elasto-plastic materials by optical shadow visualisation
✍ Scribed by M. Držík; O. Ivánková
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 897 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0013-7944
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✦ Synopsis
The optical method of shadow visualisation is used for the experimental determination of the J-integral value. Optical rehtions have been obtained to describe the formation of shadow patterns (caustics) from an optical scheme making use of an imaging lens. The assumption from which the evaluation formulas are deduced is based on the nea&eld stress distribution for e&to-plastic power hardening material taking into account the HRR theory. An analysis has been done on the field of application of such an approach for the interpretation of experimental data.