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  • 1
    Electronic Resource
    Electronic Resource
    Interfacial Effect of Urethane Film Former for Glass Fiber in Polycarbonate and Polypropylene Composites (1997)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 137 (Apr. 1997), p. 207-212 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/44/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.137.207.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Energy Absorption Capability of 3D Braided-Textile Composite Tubes with Rectangular Cross Section (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 334-335 (Mar. 2007), p. 581-584 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Fiber Reinforced Plastics (FRPs) are now under research as crush element because of itscontribution in energy absorption. The 3D-textile braiding was introduced in this study as areinforcement form of fibers. The CFRP square tubes with rectangular cross section were tested inquasi-static experiments. The results show that 3D structure was effective in holding back thepropagation of the central crack and the composite tube with a design on the corners could performbetter energy absorption capability
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.581.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Energy Absorption Characteristics of Crash Worthy Structural Composite Materials (1997)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 141-143 (Sept. 1997), p. 585-622 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/44/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.141-143.585.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    The stress analysis method for three-dimensional composite materials (1994)
    Springer
    Applied composite materials 1 (1994), S. 197-216 
    Details
    ISSN: 1573-4897
    Keywords: Three-dimensional composite material ; Composite material ; Stress analysis ; Elastic stiffness ; Strength analysis ; Optimum design ; Stress averaging method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This study proposes a stress analysis method for three-dimensionally fiber reinforced composite materials. In this method, the rule-of mixture for composites is successfully applied to 3-D space in which material properties would change 3-dimensionally. The fundamental formulas for Young's modulus, shear modulus, and Poisson's ratio are derived. Also, we discuss a strength estimation and an optimum material design technique for 3-D composite materials. The analysis is executed for a triaxial orthogonally woven fabric, and their results are compared to the experimental data in order to verify the accuracy of this method. The present methodology can be easily understood with basic material mechanics and elementary mathematics, so it enables us to write a computer program of this theory without difficulty. Furthermore, this method can be applied to various types of 3-D composites because of its general-purpose characteristics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00567527
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  • 5
    Electronic Resource
    Electronic Resource
    Predation on eggs by conspecific males in two Japanese damselfishes,Pomacentrus nagasakiensis andChromis notatus notatus, after removal of egg-guarding males (1989)
    Springer
    Journal of ethology 7 (1989), S. 97-104 
    Details
    ISSN: 1439-5444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Egg predation by conspecific males of damselfishes,Pomacentrus nagasakiensis andChromis notatus notatus, was studied at Bohnotsu (31°15′ N, 131°15′ E) and Tsuyazaki (33°47′ N, 130°29′ E), respectively. InP. nagasakiensis, 7 egg-guarding males were removed from nests, and intrusion and egg predation by conspecific males took place in all of the nests within an average time of 12.2 min. Frequency of attacks on eggs by other reef fishes during the period between the removal of egg-guarding males and intrusion of conspecific males was lower than expected, considering the frequency of aggressive displays of the egg-guarding males. The results of male removal experiments forChromis notatus notatus were almost the same, with intrusion and egg predation by conspecific males occurring in all 12 of the nests from which egg-guarding males had been removed. SixP. nagasakiensis and 15C. notatus notatus which intruded into the nests and preyed on eggs were collected. All were males except for 1C. notatus notatus female. Results suggest that these males which intruded into vacant nests to eat eggs did not have clutches of their own during the spawning bouts when the experiments were done. Results also showed that the intruding males were not inferior to egg-guarding males in standard length, gonadosomatic index, and condition factor. It is clear that males which do not have their own clutches during at least 1 spawning bout and prey on others' eggs when egg-guarding males disappear are common in these 2 gregariously nesting damselfishes. It is discussed that conspecific eggs are potentially a good food source not only for other species of reef fishes but also for conspecific males which do not have their own eggs during the spawning bouts. The origin of males wich prey on eggs of other conspecifics is also considered. Some aspects of egg-guarding and aggressive behavior of males in damselfishes are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02350030
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  • 6
    Electronic Resource
    Electronic Resource
    Basic Study of Progressive Crushing Mechanism (2000)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 177-180 (Apr. 2000), p. 321-326 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/45/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.177-180.321.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Strength analysis for three-dimensional fiber reinforced composites (1995)
    Springer
    Advanced performance materials 2 (1995), S. 161-176 
    Details
    ISSN: 1572-8765
    Keywords: finite-element method ; strength analysis ; three-dimensional composite material ; unit cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Three-dimensional fiber reinforced composite materials produced by impregnating resin into woven fabric have superior interlaminar and impact strength and are capable of being formed into complex shapes. Consequently it is expected in the future that they will be used for various structural members which have to date been difficult to make with conventional composite materials. With the growth in their fabrication technoloy, the development of a strength analysis method is being demanded. This paper describes a strength analysis method for three-dimensional composite materials on the basis of a micro-mechanical analysis of a unit cell. The unit cell is a small geometrical unit of fiber architecture. A feature of the present analysis method is to represent a unit cell as a rigid frame structure constructed of fiber-beam elements and matrix-beam and matrix-rod elements. Strength analyses are made for orthogonal weave and 5-axial weave three-dimensional carben/epoxy composite materials; the tensile, compressive, and shear moduli and strengths, and Poisson's ratio are calculated. The analytical results show fairly good agreement with experimental results; 11%, 21%, and 20% differences between them on the average for elastic moduli, strengths, and Poisson's ratios, respectively. It is also understood that the present idealized analysis model cannot accurately predict the characteristics of undulated fiber composites, especially in respect to the compressive strength.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00711269
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  • 8
    Electronic Resource
    Electronic Resource
    The influence of the silane coupling agent and delamination growth direction on mode I interlaminar fracture toughness of glass woven fabric composites (1998)
    Springer
    Journal of materials science 17 (1998), S. 515-518 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006549015345
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  • 9
    Electronic Resource
    Electronic Resource
    Fracture and acoustic emission characteristics of glass fiber reinforced plastics panels for hot water (1994)
    Brookfield, Conn. : Wiley-Blackwell
    Polymer Composites 15 (1994), S. 206-216 
    Details
    ISSN: 0272-8397
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This study deals with the fracture process and acoustic emission (AE) characteristics of a randomly oriented E-glass fiber mat reinforcement with a crosslinked polyester. These panels were evaluated after they were immersed in hot water. The fiber volume content of the panel was 19%. Glass fiber reinforced plastics (GFRP) panels wer immersed in water at 81°C. Bending and AE monitoring tests were Performed and after bending, the cross-section of the specimen was observed by an optical microscope and SEM. The influence of degradation, due to water immersion, on the changes of fracture process of GFRP is discussed. The dominant fracture mode of the virgin specimen was matrix cracks, whereas that of the immersed specimen was debondings at the fiber bundle/matrix and fiber/matrix interfaces. This change was caused by reduction of the bonding strength at the interface. The scale of fracture can be estimated by both AE amplitude and AE energy and this estimation method was used to estimate the fracture mode changes of GFRP panels immersed in hot water.
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pc.750150306
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  • 10
    Electronic Resource
    Electronic Resource
    Degradation behavior of mechanically fastened joints of glass-reinforced crosslinked polyester immersed in hot water (1995)
    Brookfield, Conn. : Wiley-Blackwell
    Polymer Composites 16 (1995), S. 240-249 
    Details
    ISSN: 0272-8397
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This study deals with the degradation of mechanically-fastened GFRP joints immersed in hot water (80°C). The material used was randomly oriented E-glass fiber continuous strand mat with a crosslinked polyester. Three kinds of joint geometries were adopted; thickness was 3 mm, hole diameter was 6 mm, the distance from hole center to top-edge was 18 mm (3e), and specimen widths were 18 (3w), 30 (5w), and 42 mm (7w). Failure modes of original dry specimens were a function of joint geometry, The dominant failure mode of 3w3e joints was net-tension, whereas 5w3e and 7w3e joints displayed bearing failure. As degradation progressed, the dominant failure mode gradually shifted from net-tension to bearing failure. Strength reduction was marked in 5w3e and 7w3e joints, in which the dominant failure mode was bearing. Joint strength and failure mode were predicted from the combination of a macroscopic failure criterion and characteristic curves obtained from tensile testing of rectangular specimens with holes, bearing tests, and finite element analysis. Predictions agreed with experiment.
    Additional Material: 18 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pc.750160308
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