Abstract:MANY AREAS OF ORTHOPAEDIC SURGERY WOULD BENEFIT FROM AN INJECTABLE,BIOCOMPATIBLE BONE CEMENT OR BONE REPLACEMENT MATERIAL WHICH COULD PROVIDE IMMEDIATE STRUCTURAL REINORCEMENT TO SKELETAL REGIONS AND THEN GRADUALLY BE INCORPORATED INTO HOST BONES. THE HARVARD MEDICAL SCHOOL BIOMECHAINCS LABORATORY… more
Abstract:THIS PROJECT WILL DEVELOP A TEST PROCEDURE TO DETERMINE STRENGHT OF ROCKET MOTOR CASE MATERIALS AT TEMPERATURES APPROACHING THE MELTING POINT OF THE MATERIALS TO EXTEND THEDATA PRESENTED IN MIL-HDBK-5C. LASER TECHNIQUES TO MEASURE STRAIN BY OBSERVING FLAGS ON THE TEST SPECIMENS AT ELEVATED… more
Abstract:HOT ISOSTATIC PRESSING OF SILICON NITRIDE AND SILICON CARBIDE IN NITROGEN PRODUCES STRUCTURAL CERAMICS WITH STRENGTH MORE THAN 20% ABOVE NORMAL HOT PRESSED STRUCTURES. THE MECHANISM OF STRENGTHENING BY THIS METHOD IS NOT UNDERSTOOD. EXAMINATION OF THE STRUCTURE OF THE BODIES INDICATE THE PRESENCE OF… more
Abstract:CARBON-CARBON COMPOSITES ARE IMPORTANT HIGH TEMPERATURE STRUCTURAL MATERIALS. BROADENING THE USE OF CARBON-CARBON MATERIALS IN OXIDIZING ENVIRONMENTS REQUIRES THE DEVELOPMENTOF THIN CRACK-FREE OXIDATION-RESISTANT COATINGS FOR HIGH- STRENGTH COMPOSITE SUBSTRATES. THE PRIMARY OBJECTIVE OF THISPROGRAM… more
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