Detecting surface deformations photographically
Simple photographic technique detects cracks and changes as small as 0.08 mm in surface contours of opaque objects subjected to environmental and other tests.
Beckerle, L. D.↗
Engineering topics
Beckerle, L. D.
Publications and source records attributed to Beckerle, L. D..
Improved radiant-heat oven
Greatly improved oven materially increases lamp life by using a new reflector arrangement. Entire unit uses less power, yet heats test articles to higher temperatures with lower cooling requirements than previous ovens. Improved design offers significant savings in costs and energy.
Beckerle, L. D.↗