Overcoming Line-of-Sight Challenges in Optical Testing
Optical measurement systems such as ARAMIS Optical Strain use digital image correlation (DIC) to capture strain, displacement, and motion across a visible surface without covering a test article with sensors and wires. While effective, this approach has one unavoidable requirement: the cameras need to see the area being measured.
That sounds obvious, but in practice a grip, bracket, cable, or even the test article itself can block the critical region, sometimes only after the test begins.
The answer is not always to accept missing data or redesign the entire test. Often, the right viewing strategy can solve the problem.