Anti-Penetration Performance of Ceramic Composite Armor Analysis Based on the Unified Strength Theory

2012 ◽  
Vol 557-559 ◽  
pp. 353-356
Author(s):  
Bao Feng Li ◽  
Jian Zheng ◽  
Xin Hua Ni ◽  
Yan Mei Qu ◽  
Xiao Wen Li ◽  
...  
Keyword(s):  
Compression Ratio ◽  
Ceramic Composite ◽  
Strength Theory ◽  
Experiment Data ◽  
Unified Strength Theory ◽  
Composite Armor ◽  
Long Rod ◽  
Ceramic Composite Armor ◽  
Dynamics Problems ◽  
Ceramic Targets

The resistance pressure was the key to solve these problems that long rod projectiles penetrated ceramic targets at high velocity. Based on the twin shear united strength theory and the A-T model, the penetration depth were calculated. But the calculation result didn’t agree with experiment data. So the tension-compression ratio was redefined to apply to the dynamics problems according to the experiment data. And satisfied results were obtained.

Design, manufacture, and analysis of ceramic-composite armor

2016 ◽  
pp. 349-367 ◽  
Author(s):  
L. Bracamonte ◽  
R. Loutfy ◽  
I.K. Yilmazcoban ◽  
S.D. Rajan
Keyword(s):  
Ceramic Composite ◽  
Composite Armor ◽  
Ceramic Composite Armor

Effect of Al alloy back panel on the dynamic penetration and damage characteristics of ceramic composite armors

2019 ◽  
Vol 9 (7) ◽  
pp. 723-731
Author(s):  
Weilan Liu ◽  
Zhou Chen ◽  
Tengzhou Xu ◽  
Junfeng Hu ◽  
Jiaduo Li
Keyword(s):  
Ceramic Composite ◽  
Composite Layer ◽  
Al Alloy ◽  
Ballistic Performance ◽  
Damage Characteristics ◽  
Composite Armor ◽  
Back Panel ◽  
Dynamic Penetration ◽  
Ceramic Composite Armor ◽  
Hybrid Ceramic

This paper mainly focuses on the investigation of dynamic penetration and damage characteristics of a hybrid ceramic composite armor normally impacted by 12.7 mm armor piercing incendiary projectiles. The hybrid ceramic composite armor was composed of a ceramic cylinder layer, a Ti–6Al–4V plate, an ultrahigh molecular weight polyethylene (UHMWPE) composite layer, and an Al alloy panel. Three different areal densities of composite laminates with 82, 87, and 92 kg/m2 were tested. 3D finite element model of the ceramic composite armor was generated in ABAQUS, and the simulation results were employed to study the damage evolution. The effect of alumina ceramic cylinders layer on the ballistic performance and the failure mechanisms of Ti–6Al–4V and UHMWPE after ballistic impact were examined by experimental and simulative results. According to the numerical and analytical models, an optimal thickness range of Al alloy back panel was found in minimizing areal density of the ceramic composite armor.

Maximum Reduction in Thickness in a Single Sheet Forming Pass Based on Unified Strength Theory

2012 ◽  
Vol 159 ◽  
pp. 151-155 ◽  
Author(s):  
Xiao Wei Li ◽  
Jun Hai Zhao ◽  
Qi Yao Wang
Keyword(s):  
Compression Ratio ◽  
Yield Criterion ◽  
Sheet Forming ◽  
Strength Theory ◽  
Unified Strength Theory ◽  
Maximum Reduction ◽  
Special Cases ◽  
Wide Range ◽  
Tension And Compression ◽  
Single Sheet

Based on unified strength theory, the equation for estimating the maximum reduction in thickness in a single sheet forming pass is obtained. Included the contribution of both intermediate principal shear stress and varying tension-compression-ratio to material mechanical property, the equation developed by this paper can reasonably apply to a wide range of material. It can be proved that the equation for estimating the maximum reduction based on unified strength theory becomes that based on unified yield criterion, when material has equal strength in tension and compression, i.e., the tension-compression-ratio of material is equal to units; and, that the values of the maximum reduction obtained previously based on Mises, or Tresca criterion, are all just special cases of those based on unified yield criterion. In addition, the maximum reduction in thickness for sheet drawing and extrusion is equal to one another.

Design and ballistic penetration of the ceramic composite armor

2016 ◽  
Vol 84 ◽  
pp. 33-40 ◽  
Author(s):  
Weilan Liu ◽  
Zhaofeng Chen ◽  
Xingwang Cheng ◽  
Yangwei Wang ◽  
Adjei Richard Amankwa ◽  
...  
Keyword(s):  
Ceramic Composite ◽  
Composite Armor ◽  
Ceramic Composite Armor ◽  
Ballistic Penetration

scholarly journals Research on structural design and anti-penetration performance of ceramic composite armor

2021 ◽  
Vol 2011 (1) ◽  
pp. 012031
Author(s):  
Youchun Zou ◽  
Chao Xiong ◽  
Junhui Yin ◽  
Huiyong Deng ◽  
Kaibo Cui
Keyword(s):  
Structural Design ◽  
Ceramic Composite ◽  
Composite Armor ◽  
Ceramic Composite Armor

Development of Scanning Microwave Technology for Ceramics in Extreme Environments

2010 ◽  
Vol 65 ◽  
pp. 153-162
Author(s):  
Jack R. Little Jr.
Keyword(s):  
Ceramic Composite ◽  
Extreme Environments ◽  
Ceramic Matrix Composites ◽  
Ceramic Materials ◽  
Dielectric Materials ◽  
Ceramic Tiles ◽  
Manufacturing Defects ◽  
Advanced Ceramic ◽  
Composite Armor ◽  
Ceramic Composite Armor

Advanced ceramic materials are required to meet increasing high temperature demands of components in advanced propulsion engines for high performance aircraft as well as increasing structural demands in ceramic-composite armor. Monitoring the structural performance of these advanced ceramic materials presents challenges. Recently a new technology, Evisive ScanTM, based on microwave interferometry has been developed that allows condition monitoring. The internationally patented Evisive Scan™ method (1, 2, 3, 4, 5, 6), utilizes microwaves to interrogate dielectric materials. The microwaves are reflected at areas of changing dielectric constant. The reflected energy and the interrogating beam are combined to form an interference pattern which is measured in the transceiver as a signal voltage. The signal voltage is sampled at many positions in the inspection area. This point cloud is displayed as an Evisive Scan™ image, which presents volumetric detail of the inspected part. Over the past two years the technology has been demonstrated on Ceramic Matrix Composites and has shown to be an efficient measurement of porosity and manufacturing defects. The method has also been demonstrated to be applicable to ceramic composite armor made of monolithic ceramic tiles in complex, multilayer structures.

Unified Stresses Solution for Sheet Forming

2012 ◽  
Vol 463-464 ◽  
pp. 629-633
Author(s):  
Xiao Wei Li ◽  
Jun Hai Zhao ◽  
Qi Yao Wang
Keyword(s):  
Shear Stress ◽  
Compression Ratio ◽  
Yield Criterion ◽  
Mechanical Analysis ◽  
Sheet Forming ◽  
Strength Theory ◽  
Unified Strength Theory ◽  
Tension And Compression ◽  
Special Case

Based on unified strength theory, the unified stresses solution for sheet forming is presented according to mechanical analysis developed, and accurate enough for much material due to the contributions of both intermediate principal shear stress and varying tension-compression-ratio included. Notably, by denoting a notation of h, the expressions presented to estimate stresses of billet for sheet forming can be apply to both drawing and extrusion. In addition, when material has identical strength in tension and compression, i.e., the tension-compression-ratio of the material is equal to unit, the stresses solution based on unified strength theory become that based on unified yield criterion. Accordingly, it can be proved that the stresses solution based on Mises criterion is just a special case of that based on unified yield criterion.

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