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Author : William J. Jaques (CAPT, USAF.)
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (132 download)
Download or read book Soft Body Impact Damage Effects on Boron-aluminum Composites written by William J. Jaques (CAPT, USAF.) and published by . This book was released on 1974 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William J. Jaques
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.3/5 (91 download)
Download or read book Soft Body Impact Damage Effects on Boron-Aluminum Composites written by William J. Jaques and published by . This book was released on 1975 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigated the effects of soft body impact damage on the residual tensile and axial fatigue strength of Boron-6061 Aluminum composite material. Unidirectional B-6061 Al specimens were impacted with room temperature vulcanizing rubber (RTV) spheres in a powder charge gun facility. Specimens were also impacted under five different tensile loads. Residual tensile strength versus impact velocity plots were generated for each prestress level. The composite was further characterized by axial fatigue and nondestructive tests. All tests were carried out at room temperature. A similar damage and residual strength analysis was done for Ti-6Al-4V to provide baseline data against which to compare the composite. It was concluded that Ti-6Al-4V is much more resistant to impact damage than unidirectional B-6061 Al. A fracture mechanic analysis is presented and a fracture mechanics model proposed for unidirectional B-6061 Al impacted specimens.
Author : John Gordon Carlisle (2LT, USAF.)
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (132 download)
Download or read book Hard-body Impact Damage Effects on Boron-aluminum Composites written by John Gordon Carlisle (2LT, USAF.) and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John G. Carlisle
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (227 download)
Download or read book Hard-Body Impact Damage Effects on Boron-Aluminum Composites written by John G. Carlisle and published by . This book was released on 1974 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigation was conducted to study the effects of foreign object damage on the residual tensile and tensile fatigue strength of a composite material, unidirectional boron-aluminum-6061. Curves were generated for various levels of tensile prestress during the ballistic impaction which related velocity of impact with the residual tensile strength of the specimens. The composite material was further characterized by tensile fatigue tests, radiography, and photography. A similar damage and fatigue analysis was done for Ti-6Al-4V to provide baseline data with which to compare the composite. All tests were carried out in lab air and at room temperature. It was concluded that for a given level of impact damage B/Al-6061 suffers much greater total loss and percentage loss of residual tensile strength than does Ti-6-4. Also, a fracture mechanics model fits the failure stress versus crack length data for B/Al-6061 resulting from hard-body impact. (Author).
Author : JC. Carlisle
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (125 download)
Download or read book Impact Damage Effects on Boron-Aluminum Composites written by JC. Carlisle and published by . This book was released on 1975 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The foreign-object damage problem associated with jet engines was investigated by impacting both titanium (6Al-4V) and boron-aluminum specimens with either steel or room-temperature vulcanizing rubber spheres to simulate the two principal types of ingested foreign objects. To simulate engine operating conditions, some specimens were impacted while under a tensile load. Results indicate that a prestressed composite suffers much greater damage than simple cantilevered specimens. Ti-6Al-4V exhibits excellent impact resistance, loosing only 10 percent of its ultimate tensile strength up to the highest prestresses and impact velocities. Composite specimens react much differently depending on the type of impactor. Steel spheres cause severe damage at very low impact velocities. Room-temperature vulcanizing rubber, on the other hand, causes little damage up to a velocity threshold. Above this point, specimen failure was observed at some prestresses upon impact. The residual tensile and low-cycle fatigue strength of both boron-aluminum and titanium was documented for various impacting velocities and prestresses. A fracture-mechanics analysis is presented which successfully predicts the effects of room-temperature vulcanizing rubber impact on boron-aluminum composites.
Author : United States. Energy Research and Development Administration
Publisher :
ISBN 13 :
Total Pages : 1314 pages
Book Rating : 4.3/5 (91 download)
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976 with total page 1314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Andrew Knott
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (392 download)
Download or read book The Detection and Effect of Fabrication Damage in Boron Aluminum Composites written by Michael Andrew Knott and published by . This book was released on 1976 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Energy Research and Development Administration. Technical Information Center
Publisher :
ISBN 13 :
Total Pages : 1118 pages
Book Rating : 4.3/5 (129 download)
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1976 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. Steven Johnson
Publisher : ASTM International
ISBN 13 : 080311270X
Total Pages : 289 pages
Book Rating : 4.8/5 (31 download)
Download or read book Metal Matrix Composites written by W. Steven Johnson and published by ASTM International. This book was released on 1989 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fourteen peer-reviewed papers on testing techniques, analysis approaches, and descriptions of various failure processes. From the Symposium on [title] held at Sparks, NV, April 1988. Annotation copyright Book News, Inc. Portland, Or.
Author : United States. Energy Research and Development Administration
Publisher :
ISBN 13 :
Total Pages : 780 pages
Book Rating : 4.0/5 ( download)
Download or read book ERDA Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 664 pages
Book Rating : 4.F/5 ( download)
Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1983 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.:/5 (3 download)
Download or read book Government Reports Announcements written by and published by . This book was released on 1975-06-27 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Marvis Kelly White
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.:/5 (259 download)
Download or read book The Effect of Environment on Thermal Cycling Damage in Boron-aluminum Composites written by Marvis Kelly White and published by . This book was released on 1976 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 882 pages
Book Rating : 4.:/5 (3 download)
Download or read book Government Reports Annual Index written by and published by . This book was released on 1975 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (317 download)
Download or read book Mechanisms of Fatigue Damage in Boron/aluminum Composites written by and published by . This book was released on 1980 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David L. McDanels
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (31 download)
Download or read book Effects of fiber diameter and matrix alloys on impact-resistant boron/aluminum composites written by David L. McDanels and published by . This book was released on 1976 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efforts to improve the impact resistance of B/Al are reviewed and analyzed. Nonstandard thin-sheet Charpy and Izod impact tests and standard full-size Charpy impact tests were conducted on composites containing unidirectional 0.10-,0.14-, and 0.20-mm-(4-, 5.6-, and 8-mil- ) diameter boron fibers in 1100, 2024, 5052, and 6061 Al matrices. Impact failure modes of B/Al are proposed in an attempt to describe the mechanisms involved and to provide insight for maximizing impact resistance. The impact strength of B/Al was significantly increased by proper selection of materials and processing. The use of a ductile matrix (1100 Al) and large-diameter (8-mil) boron fibers gave the highest impact strengths. This combination resulted in improved energy absorption through matrix shear deformation and multiple fiber breakage.
