Abstract: Insertion fitting/coupler devices for coupling to a flowpath, and methods of using such insertion fitting/coupler devices, are disclosed. The insertion fitting/coupler devices include a coupler that includes a through hole and a stem portion. The insertion fitting/coupler devices also include a nut that includes a through hole, a rim and a body portion. The insertion fitting/coupler devices further include a body member that includes a through hole and an outer flange. The body member extends into the through hole of the coupler such that an end of the stem portion of the coupler engages the outer flange of the body member. An inner side of the body portion of the nut engages with an outer surface of the stem portion of the coupler such that the flange is secured between the rim of the coupler and the end of the stem portion of the coupler.

Abstract: A device and method for monitoring conditions associated with pavement deterioration are disclosed. Conditions such as voids or loss of support under a rigid pavement, moisture infiltration in asphalt concrete pavement, fine cracking in pavements, delamination of overlays, and aging of asphalt may be measured according to the present invention. These pavement conditions are detected by estimating Young's and shear moduli in the pavement, base, and subgrade from the following wave propagation measurements: Impact Echo; Impulse Response; Spectral Analysis of Surface Waves; Ultrasonic Surface Wave; and Ultrasonic Body Wave Velocity. The pavement response produced by high- and low-frequency pneumatic hammers on five accelerometers and three geophones is recorded. A computer controls data acquisition, instrument control, and interpretation; measurements and interpretations are reported in both screen and database formats.