Investigation on the Hole-producing Techniques of Residual-stress Measurement by Incremental Hole-drilling Method in Injection Molded Part 


Vol. 19,  No. 8, pp. 1776-1780, Aug.  2018
10.1007/s12221-018-8332-7


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  Abstract

Injection molding is one of the most important processes for manufacturing plastic parts, but residual stresses are generated due to non-uniform temperature distribution in the mold cavity. It is important to predict the internal stress development during molding and after ejection and measurement of the residual stress distribution is needed to verify the prediction of the residual stresses. The incremental hole-drilling method was employed to evaluate residual stresses in injection-molded parts. An experimental investigation is performed to study the effect of induced drilling stresses in incremental hole-drilling method. While the ultra sonic mill for the through-hole drilling would tend to satisfy the lowinduced-stress requirement, UV laser processing could not somewhat satisfy the quality of the bottom surface of the hole. This study reports hole-producing techniques that might be suitable for the general requirements of residual stress measurement by the hole-drilling method.

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  Cite this article

[IEEE Style]

C. H. Kim, "Investigation on the Hole-producing Techniques of Residual-stress Measurement by Incremental Hole-drilling Method in Injection Molded Part," Fibers and Polymers, vol. 19, no. 8, pp. 1776-1780, 2018. DOI: 10.1007/s12221-018-8332-7.

[ACM Style]

Chai Hwan Kim. 2018. Investigation on the Hole-producing Techniques of Residual-stress Measurement by Incremental Hole-drilling Method in Injection Molded Part. Fibers and Polymers, 19, 8, (2018), 1776-1780. DOI: 10.1007/s12221-018-8332-7.

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