CompositesWorld

MAR 2018

CompositesWorld

Issue link: https://cw.epubxp.com/i/944580

Contents of this Issue

Navigation

Page 15 of 51

14 CompositesWorld DESIGN & TESTING MARCH 2018 FIG. 4 Screen shots taken from the video gauge images identify KGR equivalent measurement points (top) compared to those gathered by the conventional shear gauge (bottom). Source | Imetrum In addition, it allows all the rich data currently not captured to be recorded for in-depth analysis (Fig. 4, at left). A total of 18 points were identified and measured (Fig. 5, p. 15) yielding the following data: • Shear strains between points 16 and 17 provide the basic functionality of the KGR extensometer. • Tracking points 2 and 16 and points 3 and 17 allow rotation of the sample to be determined. • Tracking points 3; 11 and 17; and 4, 12 and 17 allow the shear and tensile strains in the arms of the test fixture to be captured. • Tracking points 5 and 6; 9 and 10; and 13 and 14 allows the strain in the adhesive to be measured directly. • Tracking the displacements of points 2 and 3 or 16 and 17 allows any change in adhesive thickness to be captured. e various relationships between these points can be tracked in real-time during the test and/or stored for post-process analysis.

Articles in this issue

Links on this page

Archives of this issue

view archives of CompositesWorld - MAR 2018