Development and application of basic analytical principles for materials and design synthesis to advanced concepts for space and launch vehicles quarterly progress report, mar. 23 - jun. 23, 1964

Energy absorbing structures and materials for spacecraft landing system, shell buckling problems, and use of high strength, low ductility materials in pressure vessel

Putting the voluntary sector in its place : geographical perspectives on voluntary activity and social welfare in Glasgow.

The growing political and social significance of the voluntary sector in contemporary welfare reform is reflected in a wide body of research that has emerged in the political and social policy literature since the mid-1980s. While this work adds considerably to our understanding of the changing role of the voluntary welfare sector, these accounts are largely aspatial. Yet, geographical perspectives offer important insights into the development of the voluntary sector at both micro-and macro-levels. The purpose of this paper is thus twofold: first we wish to draw attention to what it is that geographers do that may be of interest to those working in the field of social policy; and second, we illustrate why such perspectives are important. Drawing on recently completed work in Glasgow, we demonstrate how geographical approaches can contribute to a greater understanding of the uneven development of the voluntary sector across space and how voluntary organisations become embedded in particular places. By unravelling some of the complex webs of inter-relationships that operate across the geographical and political spaces that extend from national to local we reveal some unique insights into those factors that act to facilitate or constrain the development of voluntary activity across the city with implications for access, service delivery and policy development. Hence, we maintain, that geographical approaches to voluntarism are important for social policy as such approaches argue that where events occur matter to both their form and outcome

Foam composite structures

The need to include fire resistant foams into state of the art aircraft interior paneling to increase passenger safety in aircraft fires was studied. Present efforts were directed toward mechanical and fire testing of panels with foam inclusions. Skinned foam filled honeycomb and PBI structural foams were the two constructions investigated with attention being directed toward weight/performance/cost trade-off. All of the new panels demonstrated improved performance in fire and some were lighter weight but not as strong as the presently used paneling. Continued efforts should result in improved paneling for passenger safety. In particular the simple partial filling (fire side) of state-of-the-art honeycomb with fire resistant foams with little sacrifice in weight would result in panels with increased fire resistance. More important may be the retarded rate of toxic gas evolution in the fire due to the protection of the honeycomb by the foam

The enhanced Software Life Cyle Support Environment (ProSLCSE): Automation for enterprise and process modeling

In this paper, we have introduced a comprehensive method for enterprise modeling that addresses the three important aspects of how an organization goes about its business. FirstEP includes infrastructure modeling, information modeling, and process modeling notations that are intended to be easy to learn and use. The notations stress the use of straightforward visual languages that are intuitive, syntactically simple, and semantically rich. ProSLCSE will be developed with automated tools and services to facilitate enterprise modeling and process enactment. In the spirit of FirstEP, ProSLCSE tools will also be seductively easy to use. Achieving fully managed, optimized software development and support processes will be long and arduous for most software organizations, and many serious problems will have to be solved along the way. ProSLCSE will provide the ability to document, communicate, and modify existing processes, which is the necessary first step

Low cycle fatigue behavior of conventionally cast MAR-M 200 AT 1000 deg C

The low cycle fatigue behavior of the nickel-based superalloy MAR-M 200 in conventionally cast form was studied at 1000 C. Continuous cycling tests, without hold times, were conducted with inelastic strain ranges of from 0.04 to 0.33 percent. Tests were also conducted which included a hold time at peak strain in either tension or compression. For the conditions studied, it was determined that imposition of hold times did not significantly affect the fatigue life. Also, for continuous cycling tests, increasing or decreasing the cycle frequency did not affect life. Metallographic analysis revealed that the most significant damage mechanism involved environmentally assisted intergranular crack initiation and propagation, regardless of the cycle type. Changes in the gamma morphology (rafting and rod formation) were observed, but did not significantly affect the failure