Composites Engineering最新文献_第8页

Impact induced dynamic deformations and stresses in CFRP composite laminates 冲击诱发CFRP复合材料层合板的动态变形和应力

Composites Engineering Pub Date : 1995-01-01 DOI: 10.1016/0961-9526(95)90714-M

S.A. Matemilola, W.J. Stronge

引用次数: 12

Design of domes for polymeric composite pressure vessels 高分子复合材料压力容器的圆顶设计

Composites Engineering Pub Date : 1995-01-01 DOI: 10.1016/0961-9526(95)93979-6

M. Hojjati, V. Safavi Ardebili, S.V. Hoa

引用次数: 40

Construction and analysis of three-dimensional woven composite materials 三维编织复合材料的构造与分析

Composites Engineering Pub Date : 1995-01-01 DOI: 10.1016/0961-9526(95)00005-8

R. McIlhagger, B.J. Hill, D. Brown, L. Limmer

引用次数: 10

Damping characterization of unidirectional fibre reinforced polymer composites 单向纤维增强聚合物复合材料的阻尼特性

Composites Engineering Pub Date : 1995-01-01 DOI: 10.1016/0961-9526(95)00028-L

M. Kaliske, H. Rothert

引用次数: 35

Evaluation of reaction barrier compensating coatings on SCS-6 fibers in Ti-24Al-11Nb(at%) composites Ti-24Al-11Nb(at%)复合材料中SCS-6纤维反应障补偿涂层的评价

Composites Engineering Pub Date : 1995-01-01 DOI: 10.1016/0961-9526(95)00046-P

Thomas D. McGarry , Marek-Jerzy Pindera , Franklin E. Wawner

引用次数: 2

Surface thermal fracture of functionally graded ceramic coatings: Effect of architecture and materials 功能梯度陶瓷涂层的表面热断裂:结构和材料的影响

Composites Engineering Pub Date : 1995-01-01 DOI: 10.1016/0961-9526(95)00045-O

K. Kokini, B.D. Choules

引用次数: 40

Second-rank equilibrium and transport properties of fibrous composites: Effective predictions and bounds 纤维复合材料的二级平衡和输运特性:有效的预测和界限

Composites Engineering Pub Date : 1995-01-01 DOI: 10.1016/0961-9526(95)00042-L

J.C. Nadeau, M. Ferrari

{"title":"Second-rank equilibrium and transport properties of fibrous composites: Effective predictions and bounds","authors":"J.C. Nadeau, M. Ferrari","doi":"10.1016/0961-9526(95)00042-L","DOIUrl":"10.1016/0961-9526(95)00042-L","url":null,"abstract":"<div><p>A direct approach to the evaluation of the effective permeability, permittivity and transport properties of an arbitrary composite is presented in terms of gradient and flux-density concentrators. A set of requirements are presented, which are imposed on the effective properties and ultimately result in conditions of admissibility for the concentrators. In the scope of bi-constituent, poly-phase composites, two approximate choices for the concentrators are discussed in detail: the Hatta-Taya theory and the poly-inclusion theory. The Hatta-Taya formulation is shown, in general, to yield an effective property which is unsymmetric and which depends on the matrix properties at unitary volume fraction of the embedded material. The poly-inclusion theory is here applied for the first time to second-rank properties. Regardless of the constitution, morphology and texture of the inhomogeneities, the poly-inclusion approach is shown to satisfy all admissibility requirements with the exception of consistency here defined to indicate form identity of mutually inverse properties. A proof is presented which infers relationships between the symmetry group of the orientation distribution function and the symmetry group of the effective properties for special classes of composites. Bounds of order <em>n</em> are presented for macroscopically homogeneous and isotropic composites comprised of an arbitrary number of anisotropic constituents. The case of <em>n</em> = 2 corresponds to the Hashin-Shtrikman bounds which to date appear to have only been calculated for composites with isotropic constituents. Application of the effective properties to the analysis of functionally graded materials (FGMs) is addressed.</p></div>","PeriodicalId":100298,"journal":{"name":"Composites Engineering","volume":"5 7","pages":"Pages 821-838"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0961-9526(95)00042-L","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88465071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Effect of lateral stresses on fiber debonding/pull-out 横向应力对纤维脱粘/拉出的影响

Composites Engineering Pub Date : 1995-01-01 DOI: 10.1016/0961-9526(95)00064-T

Christopher K.Y. Leung, Yiping Geng

{"title":"Effect of lateral stresses on fiber debonding/pull-out","authors":"Christopher K.Y. Leung, Yiping Geng","doi":"10.1016/0961-9526(95)00064-T","DOIUrl":"10.1016/0961-9526(95)00064-T","url":null,"abstract":"<div><p>The performance of fiber reinforced composites is strongly dependent on the behavior of the fiber/matrix interface. The fiber pull-out test has been widely used to determine interfacial properties, from which fiber debonding/pull-out behavior in the composite can be deduced. Pull-out test results reported in the literature are almost always obtained under the condition of zero far-field lateral stresses. However, in many practical applications, crack bridging fibers can be under significant lateral compression (e.g. splitting cracks, shear cracks) or tension (cracks at the bottom of plates under biaxial bending). In this investigation, a novel experimental set-up is developed to study the effect of lateral stresses on fiber debonding and pull-out. Steel fiber reinforced mortar specimens were tested to provide an example. With lateral compression, both the initial interfacial friction and the effective interfacial shear strength are found to increase. A higher lateral compression, however, also results in a more rapid decrease in the interfacial friction during fiber pull-out. Therefore, while lateral compression can significantly increase the peak pull-out load, the energy absorption capacity (denoted by the area under the pull-out curve) does not increase to the same degree. Qualitatively, lateral tension imposes opposite effects to lateral compression. Quantitatively, a small lateral tension can result in changes in interfacial properties comparable in magnitude to those caused by a much higher lateral compression. Therefore, although the lateral tension that can act on a fiber is limited by the low tensile strength of the matrix, it may still impose a noticeable effect on the fiber debonding/pull-out behavior.</p></div>","PeriodicalId":100298,"journal":{"name":"Composites Engineering","volume":"5 10","pages":"Pages 1331-1348"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0961-9526(95)00064-T","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84719978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Stress-free edge effects on the transverse response of a unidirectional metal matrix composite 无应力边缘对单向金属基复合材料横向响应的影响

Composites Engineering Pub Date : 1995-01-01 DOI: 10.1016/0961-9526(95)00007-A

Joseph L. Kroupa, Noel E. Ashbaugh

{"title":"Stress-free edge effects on the transverse response of a unidirectional metal matrix composite","authors":"Joseph L. Kroupa, Noel E. Ashbaugh","doi":"10.1016/0961-9526(95)00007-A","DOIUrl":"10.1016/0961-9526(95)00007-A","url":null,"abstract":"<div><p>In using a representative volume element of a unidirectional composite, two out-of-plane boundary conditions represent edge and internal regions of a transversely loaded SCS-6/Timetal® 21S composite. A plane stress condition is proposed to represent a stress-free edge region of the composite, while a generalized plane (uniform longitudinal) strain condition is considered for internal regions. Numerical simulations with elastic-plastic matrix behavior and several different fiber-matrix interface strengths reveal a complex interaction of residual stress, fiber-matrix separation and matrix inelastic behavior which are all dependent on the out-of-plane boundary condition. Several permutations of plane stress and generalized plane strain solutions with several fiber-matrix interface strengths fail to accurately capture the non-linear behavior measured from experiments. The bounding of the experimentally determined transverse response between the plane stress and generalized plane strain solutions suggests that the transverse response may be a combination of both solutions. Strain measurements from the transversely loaded composite support speculation that the plane stress solution better represents edge regions of the composite than a generalized plane strain solution. Likewise, the generalized plane strain solution represents the internal strain state of the composite better than the plane stress case at low loads. Photomicrographs before and after transverse loading show fibers which have protruded from the edge of the specimen; thus, the strain state within the composite is transitioning to a less constrained condition.</p></div>","PeriodicalId":100298,"journal":{"name":"Composites Engineering","volume":"5 6","pages":"Pages 569-582"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0961-9526(95)00007-A","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88350350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Mechanics of debonding and delamination in composites: Asymptotic studies 复合材料中脱粘和分层的力学:渐近研究

Composites Engineering Pub Date : 1995-01-01 DOI: 10.1016/0961-9526(95)00052-O

Xiaomin Deng

引用次数: 34