A method of non-destructively assessing the integrity structures using measurements structural natural frequencies is described. It shown how made at a single point in structure can be used to detect, locate and quantify damage. The scheme presented uses finite-element analysis, since this may on any structure. principle may, however, conjunction with other mathematical techniques. Only one full analysis required for each type Results are from tests an aluminium plate cross-ply...

A method of non-destructively evaluating the integrity structures is described and applied to for which a one dimensional analysis satisfactory. It shown how vibration measurements made at single station in structure can be used, conjunction with suitable theoretical model, indicate both location magnitude defect. Receptance used this instance, but principle equally applicable other techniques mathematical analysis. Experimental results are obtained on variety components, including straight...

Fifty-four patients in whom a total of fifty-eight semiconstrained modified Coonrad elbow implants had been inserted for rheumatoid arthritis were followed mean 3.8 years (range, two to eight years). At the latest follow-up, there was little or no pain fifty-three elbows (91 per cent). The arc motion from an average point flexion 20 degrees 129 degrees, representing increase 12 extension and 11 flexion. pronation 78 14 supination 77 18 degrees. An additional ten who insertion during same...

Theoretical predictions have been made of the effect fibre orienta tion and laminate geometry on flexural torsional damping modulus reinforced composites. Materials with fibres at + θ (off- axis), ±θ (angle-ply), 0/90° (cross-ply) a general plate were in vestigated. In almost all cases, very good agreement was obtained between theoretical prediction experimental results. Some limitations theory for torsion angle-ply laminates revealed discussed.

The purpose of this study was to review our experience with the treatment twenty-five infections (in patients) after total elbow arthroplasty and examine indications for salvage prosthesis compared those resection arthroplasty. patients were divided into three groups on basis treatment. Group I comprised fourteen who managed multiple, extensive irrigation débridement procedures retention original components. primary indication evidence that it well fixed as determined both radiographically...

Forty-one consecutive patients were managed for post-traumatic osteoarthrosis or dysfunction of the elbow with use a non-customized semiconstrained Coonrad-Morrey total prosthesis. The average age at time operation was fifty-seven years (range, thirty-two to eighty-two years). followed an five and eight months two twelve Radiographs made least postoperatively (average, one month; range, years) thirty-nine forty-one patients. According Mayo performance score, sixteen (39 per cent) had...

Abstract The stresses in adhesive bonded tubular lap joints, subjected to axial and torsional loads, have been analysed using axisymmetric quadratic isoparametric finite elements. In the load case, results are compared with a previously published closed-form solution case presented here. influences on stress distributions of an fillet partial tapering adherends also investigated, extension range validity pf Goland Reissner's second criterion is proposed.

Primary degenerative arthritis of the elbow is an uncommon disorder that recently has been more clearly recognized. The purpose this study was to analyze long-term results and complications ulnohumeral arthroplasty as treatment primary osteoarthritis document any tendency for recurrence after procedure.The arthroplasties performed at our institution, between 1986 1996, in forty-six elbows (forty-five patients) with were reviewed average eighty months (range, twenty-four 164 months)...

A method for predicting the dynamic properties of laminated composite beams has been developed in this work.

Abstract The present paper considers the strength of CFRP/steel double-lap joints loaded in tension. A detailed stress analysis has been conducted shear and transverse tensile stresses joint, using an elastic-plastic model for rubber-modified epoxy adhesive. results this have combined with measured properties materials forming joint order to predict quantitatively failure strengths various designs studied. There was good agreement between theoretically predicted experimentally strengths....

The objective of this investigation is to predict the natural frequency and specific damping capacity laminated composite plates in various modes vibration by using finite element method.

Abstract The aim of this study was to select suitable adhesives for use in a mixed adhesive joint and measure their mechanical properties over wide range temperatures. Three were selected: bismaleimide (Redux 326) high temperatures two paste-form epoxies (Hysol EA 9359.3 Supreme 10HT) low tension (dogbone specimens) shear (thick adherend test) are presented from −55 200°C all three adhesives. Dynamic tests also carried out confirm the static modulus results. correlations between tensile...

A vibration technique for non-destructively evaluating the integrity of structures is described and applied to components fabricated from fibre reinforced plastics. The method uses measurements changes in lower structural natural frequencies, which can be made at a single point structure, conjunction with dynamic analysis system detect, locate roughly quantify damage. mathematical model structure need not sophisticated only one required each type tested. It shown possible detect variety...

This report is part of a series white papers commissioned for the American Society Radiation Oncology (ASTRO) Board Directors as ASTRO's Target Safely Campaign, focusing on role peer review an important component broad safety/quality assurance (QA) program. Peer one most effective means assuring quality qualitative, and potentially controversial, patient-specific decisions in radiation oncology. summarizes many areas throughout therapy that may benefit from application review. Each oncology...