Measuring Strains Within 3D Printed Objects

[Brian_Krassenstein]

As more and more structural components are produced using 3D printing, a method for measuring the residual strains and stresses of such complex objects as a result of the 3D printing process becomes equally important. Luna has recently released the details of an innovative new system for measuring the residual stresses inside of 3D printed objects that can be embedded as part of the 3D printing process. To demonstrate the feasibility of their system, titled ODiSI, a block was 3D printed and at various stages in the printing process, a fiber optic cable was embedded in the particular section completed of the block. The information gathered through these sensors showed a high level of residual strain in the middle of the block that lessened towards the outer layers of the piece. This type of information is invaluable when engineering pieces the stresses for which need to be calculated in extremely accurate detail. Read more about the method in the full story: http://3dprint.com/82857/measuring-residual-strain/


Below is a look at Luna's 3D printed test block:

[Sebastian Finke]

Very interesting and informative article. Thanks!