The use of conventional strain gauges evaluation for measurements of residual stresses in welded joints
Residual stresses (RS) can reach significant values in a welded joint, committing the quality of the parts since they affect their resistance to fatigue causing cracks and corrosion under stress. The use of strain gauges positioned in specific zones of welded parts, as a way of mapping the RS va...
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| Principais autores: | , , |
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| Formato: | article |
| Idioma: | English |
| Publicado em: |
Springer
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| Assuntos: | |
| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/45252 |
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| Resumo: | Residual stresses (RS) can reach significant
values in a welded joint, committing the quality of the parts
since they affect their resistance to fatigue causing cracks
and corrosion under stress. The use of strain gauges positioned in specific zones of welded parts, as a way of
mapping the RS values from the welding processes, has a
great technological interest. The method proposed in this
paper defines strategic positions for strain gauges along
ASTM A36 steel plates in butt-welded joints using Gas
Tungsten Arc Welding. Helped by a signal conditioner, RS
values were collected and registered after welding process.
The results are the readings of RS imposed by the welding
operation, taking into account thermal process effects and
the material properties. Experimental results were compared with numerical analysis, via Finite Element Method
which showed the potential use of strain gauges for measuring RS from the welding process |
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