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Shinhan Scientific Testing Instrument

Contribute to the development of industry together with the scientific instruments




Prism is an advanced hole-drilling system that dramatically improves the ability to make quick and accurate residual stress measurements.

Just like the conventional strain gage hole-drilling systems, the instrument measures changes in the part surface caused by the hole drilling and determines the previously existing residual stresses. However, the often time-consuming application of strain gages is avoided and a large area around the hole is analyzed, not averages from just a few areas. Prism measures surface distortion using electronic speckle pattern interferometry (ESPI). Only minimal sample preparation is required.

The Prism system measures surface distortion optically using laser light that is diffusely reflected from the sample surface. The PrismS software manages the measurement, collects the data and analyses the results and data quality.

Key benefits

  • Little preparation: clean measurement surface with low-reflectivity (may be spray painted).
  • Non-contact: only requires direct visual path to part; no strain gages to be applied.
  • Fast: extensive depth profile within ½ hour.
  • User friendly: easy-to-use Windows based software.
  • Easy: computer controlled, automatic measurement.
  • Materials: includes materials difficult for XRD like titanium and plastics; limited mainly by the ability to drill holes of good quality.


Company name : Shinhan Scientific Testing Instrument Co., Ltd. (SSTI)  l  CEO : 허창영(Chang Young Hur)
[Headquarter] Address : A601 ho, Hagye Techno Town, 10 Nowon-ro 15 gil, Nowon-gu, Seoul 01788, Korea  l   Tel : 82-2-973-5300  l  Fax : 82-2-973-9989  l  E-mail :
[South A/S Center] Address : 901 Room, 56, Yongi-ro Seongsan-gu, Changwon-si, Gyeongsangnam-do, 51522, Korea   l   Tel : 055-285-9576  l  Fax : 055-285-9577
[Demo Room] Address : 112 Room, 56, Yongi-ro Seongsan-gu, Changwon-si, Gyeongsangnam-do, 51522, Korea
Copyright © 2017 Shinhan Scientific Testing Instrument Co., Ltd. All Rights Reserved.