A combined technique of an imaging plate (IP) and thin absorbers was applied to tritium in nickel and vanadium specimens using copper, aluminum, and gold foil as the absorber. Copper and aluminum foil are used as a K-edge filter with X-ray absorption at 9.0 keV and 1.56 keV, respectively. Gold has L-edges X-ray absorption at around 13 keV. With this technique, photostimulated luminescence (PSL)...

Ultrasonic guided waves inspection using Lamb waves is suitable for damage detection in metallic structures. This paper will present experimental results obtained using guided Lamb waves to detect flaws in aluminum specimens with design features applicable to space applications. Two aluminum panels were fabricated from a variable-thickness aluminum top plate, with two bolted I-beams edge stiffe...

Abstract Carbon fiber reinforced polymer (CFRP) with high specific strength, modulus, and other outstanding properties, which could be used in aerospace, shipbuilding, railway. The joint of carbon composite material plate metal plays an important role the overall performance structure. In this paper, a progressive damage model is developed based on laminate theory 3D Hashian theory. double bolt...

A comparison was made between two approaches to predict acoustic emission waveforms in thin plates. A normal mode solution method for Mindlin plate theory was used to predict the response of the flexural plate mode to a point source, step-function load, applied on the plate surface. The second approach used a dynamic finite element method to model the problem using equations of motion based on ...

BACKGROUND Fracture-dislocation of the proximal interphalangeal (PIP) joint is a relatively common injury. Various treatments for fracture-dislocation of the PIP joint have been reported. In the present study, we performed open reduction through a midlateral incision using absorbable sutures to reduce the small bone fragments and performed volar plate repair. METHODS We treated nine patients ...

The recent years have witnessed an increasing interest in using wireless structural monitoring as a low-cost alternative to tethered monitoring systems. Previous work considered wireless sensors strictly as passive elements in the monitoring system, responsible only for collection of response measurements. This paper explores expansion of the wireless structural monitoring paradigm by including...

Tibial plateau–leveling osteotomy (TPLO) is an increasingly popular method for treating anterior cruciate ligament ruptures in dogs. In recent years, there have been anecdotal reports of neoplasia near plate implantation sites. In this study, metallurgic analysis was performed on 3 new Slocum TPLO plates, 8 retrieved TPLO plates, and 1 new Synthes dynamic compression plate. The 3 new Slocum pla...

This work is concerned with establishing the feasibility of a data-on-demand (DoD) uncertainty quantification (UQ) protocol based on concentration-of-measure inequalities. Specific aims are to establish the feasibility of the protocol and its basic properties, including the tightness of the predictions afforded by the protocol. The assessment is based on an application to terminal ballistics an...

Abstract This study investigated the effects of scratches and bending on surface stress aluminum alloy plates with varying thicknesses. The purpose this was to provide guidance for testing different “birth death” element method used simulate generation scratches, while field under pre-stretched state obtained through displacement one end board by 2.5%. X-ray residual analyzer (μ-x360 s) experim...

Developmental testing of high explosives for military applications involves small-scale formulation, safety testing, and finally detonation performance tests to verify theoretical calculations. small-scale For newly developed formulations, the process begins with small-scale mixes, thermal testing, and impact and friction sensitivity. Only then do subsequent larger scale formulations proceed to...