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Keywords: delamination
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eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2009
ISBN-10: 0-8031-3418-5
ISBN: 978-0-8031-3418-8
... A large building in Denver, Colorado was constructed in 1999 with exterior insulation and finish system (EIFS) cladding. About a year after completion, the lamina started to debond from the foam on the darker-colored EIFS panels. Tests were conducted to determine the cause of the delamination...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2004
ISBN-10: 0-8031-3474-6
ISBN: 978-0-8031-3474-4
... Recently, a knee prosthesis containing an electron beam irradiated (58 – 72 kGy, nominal dose of 65 kGy), melt-annealed, highly crosslinked UHMWPE (HXPE) tibial insert has been developed. In the present study, the wear and delamination resistance of the HXPE tibial insert and its fatigue...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2004
ISBN-10: 0-8031-3472-X
ISBN: 978-0-8031-3472-0
... stresses and the singularity parameters in the LSI device significantly depend on it. Shape design to decrease the Weibull stress values would be effective to improve the LSI devices reliability. interface strength delamination dissimilar material joints LSI devices package geometry local...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2003
ISBN-10: 0-8031-3465-7
ISBN: 978-0-8031-3465-2
... The mixed-mode bending test has been widely used to measure delamination toughness and was recently standardized by ASTM as Standard Test Method D6671-01. This simple test is a combination of the standard Mode I (opening) test and a Mode II (sliding) test. This test uses a unidirectional...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2003
ISBN-10: 0-8031-3465-7
ISBN: 978-0-8031-3465-2
... performed using the double-cantilever beam (DCB), four-point end-notch flexure (4ENF) and mixed-mode bending (MMB) configurations. Delamination initiation values were obtained as well as propagation values. The specimens were made of 24 layers of IM7/8552 plain-weave fabric. The results were compared...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2002
ISBN-10: 0-8031-2893-2
ISBN: 978-0-8031-2893-4
... The objective of this work was to relate damage mechanisms, gleaned through electron microscopy, to delamination loci generated using fracture toughness (Mixed-Mode Bend) tests. From this, mixed-mode criteria were ranked using the ϰ 2 method (goodness of fit). The shapes of the failure loci (G...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2002
ISBN-10: 0-8031-2893-2
ISBN: 978-0-8031-2893-4
... loading conditions are investigated. Special emphasis is on initiation of matrix rollers and striations, two features indicative of Mode II fatigue failure. The initial mechanisms for delamination in this material under static and fatigue loading were found to be the same; the development of angled cracks...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2001
ISBN-10: 0-8031-2862-2
ISBN: 978-0-8031-2862-0
... The main objective of this work was to investigate and predict the behavior of damaged structural elements (skin-stringer panels). The study combined characterization through testing with fractographic analysis, and analysis of delamination using the finite-element method. The experimental...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2001
ISBN-10: 0-8031-2862-2
ISBN: 978-0-8031-2862-0
... the energy release rates. This procedure was not time efficient, and hence, less appealing. Finally, a third procedure was developed to calculate mixed-mode energy release rates as a function of delamination lengths. This procedure required only one nonlinear finite-element analysis of the specimen...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2001
ISBN-10: 0-8031-2862-2
ISBN: 978-0-8031-2862-0
... marcelled areas), although for some of the specimens the surface marcels were very obvious, and for others they were much smaller. The specimens failed by first developing cracks through the marcels at the surfaces, and then delaminations grew from those cracks, in both directions. Delamination failure...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2001
ISBN-10: 0-8031-2862-2
ISBN: 978-0-8031-2862-0
... Results are presented from a study on the effect of friction on the Mode II delamination toughness as obtained by three- and four-point bend end-notched flexure tests. Finite-element analyses are used to assess the effect of friction on the compliance and energy release rate of the two types...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2000
ISBN-10: 0-8031-2858-4
ISBN: 978-0-8031-2858-3
... to pavement characterization. pavements pavement management Ground Penetrating Radar GPR thickness quality control stripping delamination voids Kenneth 1L Maser1 Pavement Characterization Using Ground Penetrating Radar: State of the Art and Current Practice Reference: Maser, K. R., "Pavement...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 2000
ISBN-10: 0-8031-2872-X
ISBN: 978-0-8031-2872-9
... A study was conducted to improve upon currently used test procedures for determining the Mode I, Mode II and mixed-mode delamination toughness of ceramic matrix composite materials. Test methods and specimen geometries were chosen that may be used to test unidirectional or multidirectional...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1999
ISBN-10: 0-8031-2602-6
ISBN: 978-0-8031-2602-2
... on the interface between two anisotropic elastic half-spaces is considered. A formal solution is obtained by using the Stroh method in two dimensional elasticity in conjunction with the Fourier transform method. To illustrate the solution procedure, an elliptical delamination in a cross-ply composite is solved...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1998
ISBN-10: 0-8031-2609-3
ISBN: 978-0-8031-2609-1
... A stochastic model is used to predict the growth of delamination in graphite/epoxy laminates subjected to cyclic loading. The advantage of this model is that both the mean and variance associated with the growth of delamination is predicted. Understanding and predicting the variability...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1998
ISBN-10: 0-8031-2609-3
ISBN: 978-0-8031-2609-1
... parallel to the fibers in that ply, associated with delaminations emanating from these splits. A free-edge delamination model was used to explain the type and extent of the major delaminations caused by the preload/impact combinations. composites damage resistance preload instrumented impact...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1997
ISBN-10: 0-8031-2411-2
ISBN: 978-0-8031-2411-0
...-dimensional (Q-3-D) finite element analysis was conducted on each of the specimen configurations to determine the interlaminar shear stress at failure. From this analysis, s 23 was found to be 107 MPa for this material. composite materials fracture (materials) delamination fatigue (materials...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1997
ISBN-10: 0-8031-2411-2
ISBN: 978-0-8031-2411-0
... regions. fatigue (materials) composite materials graphite/epoxy delamination crack propagation rate fracture mechanics stress ratio Mode II end-notched flexture end-loaded split fracture (materials) Keisuke Tanaka I and Hiroshi Tanaka I Stress-Ratio Effect on Mode II Propagation...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1997
ISBN-10: 0-8031-2411-2
ISBN: 978-0-8031-2411-0
... This study focuses on the mode dependence of delamination growth under cyclic compressive loads in cross-ply composite plates. The model proposed makes use of an initial postbuckling solution derived from a perturbation procedure. A mode-dependent crack growth criterion is introduced...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1997
ISBN-10: 0-8031-2411-2
ISBN: 978-0-8031-2411-0
... A sublaminate analysis is used to develop an analytical solution that determines the effect of midplane internal delamination on unsymmetric elastically tailored laminated plates. A displacement field that recognizes transverse shear deformation is proposed, and an elasticity boundary value...