![](http://www.alamy.com/thumbs/6/2E6C0A3F-5CC8-429A-A528-48DEA97C26A0/HRJ3B3.jpg)
Proof Load Testing
Proof load testing on new Sweep Twist Adaptive Rotor blade using 55-gallon drums to test blade strength. Proof load is the greatest load than can be applied to a piece without straining the piece beyond the elastic limit.
Size: 3600px × 2694px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 2007, blade, control, design, energy, green, laboratory, load, loading, manufacturing, national, power, proof, proofing, quality, research, sandia, science, snl, technology, testing, turbine, wind