The National Bureau of Standards program in acoustic-ultrasonic calibrations and standards, aimed at solving some of the immediate problems, is reviewed. l~ork on acoustic emission tr~nsducers is.directed at the determination of sensitivity and spectral response by the use of a reproduc1ble stress 1mpulse. Also in the area of acoustic emission is a program to develop a theoretical basis for aco...

ISO Guide 25, General Requirements for the Competence of Testing and Calibration Laboratories requires the collection and reporting of various information about instruments calibrated by a metrology laboratory. Many Metrology Laboratories are using personal computers (PCs) connected to increase productivity and collect and report information required by the standards. This paper discuses PC bas...