Abstract
The strain on the surface of the cephalic horn of Japanese rhinoceros beetles (Trypoxylus dichotomus) is measured using a three-dimensional, digital image correlation (3D-DIC) technique. The measured surfaces of the horn are sprayed with white paint and speckled with black paint on the white paint. The head with the horn is cut from the thorax, and the head is fixed with epoxy resin. A force of 5 N is applied to the distal part of the horn. Images before and after loading are captured, and the strain on the surface of the horn is calculated from the images using a 3D-DIG technique. Results indicated that the horn is considered as a uniform strength beam.
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