Improvement of Delamination Resistance in Glass/Phenolic Composite Laminates with Nano-interlayers

2020 ◽  
pp. 493-496
Author(s):  
Hossein Ipakchi ◽  
Masoud Esfandeh ◽  
Amir Masoud Rezadoust ◽  
Mohammad Rezaei
Keyword(s):  
Composite Laminates ◽  
Delamination Resistance ◽  
Phenolic Composite

Delamination Resistance of Two Hybrid Ceramic-Composite Laminates

2005 ◽  
Vol 80 (12) ◽  
pp. 3029-3037 ◽  
Author(s):  
Willard A. Cutler ◽  
Frank W. Zok ◽  
Fred F. Lange ◽  
Panos G. Charalambides
Keyword(s):  
Composite Laminates ◽  
Ceramic Composite ◽  
Delamination Resistance ◽  
Hybrid Ceramic ◽  
Two Hybrid

A Study on Low Velocity Impact of Woven Glass/Phenolic Composite Laminates Considering Environmental Effects

2005 ◽  
Vol 297-300 ◽  
pp. 1303-1308 ◽  
Author(s):  
Jae Hoon Kim ◽  
Duck Hoi Kim ◽  
Hu Shik Kim ◽  
Byoung Jun Park
Keyword(s):  
Compressive Strength ◽  
Environmental Effects ◽  
Impact Loading ◽  
Composite Laminates ◽  
Impact Damage ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Internal Damage ◽  
The Impact ◽  
Phenolic Composite

The objectives of this study are to evaluate the internal damage and compressive residual strength of composite laminate by impact loading. To investigate the environmental effects, as-received and accelerated-aged glass/phenolic laminates are used. UT C-Scan is used to determine the impact damage characteristics and CAI tests are carried out to evaluate quantitatively the reduction of compressive strength by impact loading. The damage modes of the woven glass/phenolic laminates are evaluated. In the case of the accelerated-aged laminates, as aging time increases, initial failure energy and residual compressive strength decrease.

A Pre-Stitching Method to Manufacture Z-Pins Reinforced Woven Ceramic Matrix Composite Laminates

2013 ◽  
Vol 721 ◽  
pp. 117-120
Author(s):  
Wei Liu ◽  
Gui Qiong Jiao ◽  
Jing Guo ◽  
Hao Tian Jiang
Keyword(s):  
Carbon Fibers ◽  
Composite Laminates ◽  
Impact Resistance ◽  
Ceramic Matrix Composite ◽  
Chemical Vapor ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Chemical Vapor Infiltration ◽  
Matrix Composites ◽  
Delamination Resistance

Z-pins reinforced 2D ceramic matrix composites (CMCs), integratedly designed new materials, are developed to enhance 2D CMCs through-thickness in the form of Z-pins and to ensure significant increase in interlaminar fracture toughness, delamination resistance and impact resistance, and Z-pins reinforced 2D CMCs have much application. A manual pre-stitching method is developed to make holes in the graphite fixture to control Z-pins row spacings and to introduce yarns of 3000 T300 carbon fibers bundle into a preform. Z-pins reinforced woven CMCs for research were manufactured successfully by repeatedly using chemical vapor infiltration (CVI) to infiltrate SiC matrix into woven preform and carbon fiber sutures. It is shown that this method of manufactured Z-pins reinforced woven CMC is feasible.

scholarly journals Progressive multi-damage analysis of composite laminate using higher order zig-zag plate theory

2020 ◽  
Vol 12 (4) ◽  
pp. 168781402091536
Author(s):  
Zhaotian Wu ◽  
Chuwei Zhou
Keyword(s):  
Composite Laminates ◽  
Degrees Of Freedom ◽  
Present Model ◽  
Plate Theory ◽  
Element Model ◽  
Higher Order ◽  
Damage Analysis ◽  
Surface Conditions ◽  
Layer Composite ◽  
Delamination Resistance

In this article, a finite element model of multi-layer composite laminates with delamination based on higher order zig-zag theory is studied for the progressive delamination analysis. The degrees of freedom are simplified by the continuity conditions of shear stress between layers and the free-surface conditions at the bottom and top of laminates. The numbers of degrees of freedom are not reduced with this method while the model can take the initiation of delamination into consideration in return. Static loading analysis is implemented to simulate the performance in delamination resistance with two different plies and under two different boundary conditions. The present model can present good performance in the prediction of delamination phenomenon.

Experimental Investigation of Interlaminar Fracture Toughness of CFRP Composites with Different Stitching Patterns

2005 ◽  
Vol 297-300 ◽  
pp. 189-194 ◽  
Author(s):  
Hong Ping Zhao ◽  
Robert Kwok Yiu Li ◽  
Xi Qiao Feng
Keyword(s):  
Fracture Toughness ◽  
Composite Laminates ◽  
Test Method ◽  
Mode I ◽  
Interlaminar Fracture Toughness ◽  
Interlaminar Fracture ◽  
Reinforced Plastics ◽  
Mode I Fracture Toughness ◽  
Straight Line ◽  
Delamination Resistance

Through-thickness stitching is one of the most effective techniques to improve the delamination resistance of composite laminates. The effects of two different stitching patterns on the mode-I interlaminar fracture toughness of unidirectional carbon fiber reinforced plastics (CFRP) are examined experimentally in the present paper by using the double cantilever beam (DCB) test method. It is found that the zigzag stitching pattern results in a better toughening effect than the straight line pattern, and that the stitching density also has a considerable influence on the mode-I fracture toughness.

Enhanced delamination resistance of thick-section glass-epoxy composite laminates using compliant thermoplastic polyurethane interlayers

2018 ◽  
Vol 189 ◽  
pp. 184-191 ◽  
Author(s):  
Steven E. Boyd ◽  
Travis A. Bogetti ◽  
Jeffrey M. Staniszewski ◽  
Bradley D. Lawrence ◽  
Matthew S. Walter
Keyword(s):  
Composite Laminates ◽  
Epoxy Composite ◽  
Thermoplastic Polyurethane ◽  
Thick Section ◽  
Delamination Resistance
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