Höfling, R.R.HöflingAswendt, P.P.Aswendt2022-03-032022-03-031994https://publica.fraunhofer.de/handle/publica/184338Coherent laser light is used to measure strain in a non-contacting manner. Combining speckle pattern interferometry with digital image processing yields highly accurate strain data comparable with conventional gauges if quasi-static load is applied. The miniaturized measuring head is described and examples of application are given.deapplicationApplikationsbeispielDehnungsmessungfaseroptisches Meßsystemfiber optic measuring systemspeckle metrologySpecklemeßtechnikstrain measurement620670journal article