Wide-field optical techniques are increasingly appreciated as deformation, stress and strain measuring tools. This paper presents an advanced deformation and strain analysis method using 3D image correlation that is substantially more robust and has greater dynamic range than other full-field imaging technologies such as ESPI, shearography and moiré. Commercially available 3D image correlation photogrammetry is now understood to be effective and user-friendly for static applications such as tensile testing and metal forming analysis. This paper focuses on image correlation photogrammetry combined with stroboscopic illumination, which enables dynamic response measurements for applications such as high-speed rotating components. Photogrammetry tracks changes in an applied pattern with sub-pixel accuracy, and thus does not suffer from the speckle decorrelation limitations of ESPI. Even a pulsed ESPI system is limited to rotational speeds on the order of 10s of rpm. Theoretically, an optical derotator enables higher-speeds, but these are cumbersome to implement in practice. Principles of operation are reviewed, and results are presented showing operational strains in ionic polymeric muscle samples. The use of short-duration white light pulses to study automobile tires on road wheels at speeds up to 260 kilometers per hour is reviewed. Initial work with a pulsed laser to study a flywheel in a spin pit at up to 35,000 rpm is also described. | 
