ENGIN - A NEW INSTRUMENT FOR ENGINEERS

A new strain scanner has been built at the ISIS facility which has bee n specially designed for engineering measurements. The instrument uses large radial collimators to define a small measuring gauge volume. Su ch collimators enable large detector arrays to be employed, thus reduc ing measuring times. The technique of time-of-flight strain-scanning h as been developed using this instrument, and examples of the type of m easurements that may be made are illustrated. The current performance parameters of the instrument are outlined together with possible futur e improvements in both the spatial resolution and measuring times.