Dynamic Behavior of Materials, Volume 1

Preface	6
Contents	7
1 Dynamic Tensile Behavior of Soft Ferromagnetic Alloy Fe-Co-2V	10
Introduction	10
Materials and Experiments	10
Strain Rate and Temperature Effects	11
Conclusion	12
References	12
2 Toward Paradoxical Inconsistency in Electrostatics of Metallic Conductors	13
Introduction	13
A Simple Consistent Model of Electrostatics to Avoid the Paradoxical Inconsistency	14
1-D Solutions for a Flat Layer	16
Configuration 1	16
Configuration 2	16
Configuration 3	18
Conclusion	19
References	20
3 Ballistic Response of Woven Kevlar Fabric as a Function of Projectile Sharpness	21
Introduction	21
Background	21
Analysis	23
Conclusion	24
References	24
4 Effect of Thermomechanical Couplings on Viscoelastic Behaviour of Polystyrene	25
Introduction	25
Experimental Methods	26
Standard DMTA	26
Thermographic Approach	26
Results and Discussion	28
Standard DMTA Results	28
Discussion About the Time-Temperature Superposition Principle	29
Thermographic Results	30
Concluding Comments	32
Perspectives	32
References	32
5 Dynamic Response of Layered Functionally Graded Polyurethane Foam with NonlinearDensity Variation	33
Introduction	33
Materials and Methods	34
2-D DIC Approach	35
Results and Discussion	36
Summary	38
References	38
6 Numerical and Experimental Investigation of Density Graded Foams Subjected to Impact Loading	39
Introduction	39
Numerical Modeling	40
Experimental Study	41
Summary	43
References	43
7 Method for Characterizing Electric Current Effects on the Deformation of Metals	44
Introduction	44
Method	45
Test System	45
Strain and Temperature Measurements	46
Forced Air Cooling	47
Specimen Considerations and Design	47
Experimental	50
Results and Discussion	50
Conclusion	51
References	52
8 Mechanical Properties of Transparent Laminates Fabricated Using Multi-MaterialPhotopolymer Jetting	53
Introduction	53
Materials	54
Methodology	54
Results and Discussion	54
Further Work	56
References	56
9 Structural Intensity Assessment on Shells via the Projection of Experimental Data on a Finite-Element Mesh	58
Introduction and Background	58
Theory and Methods	59
Materials and Results	61
Discussion and Conclusion	63
References	63
10 Dynamic Compressive Response of Carbon Fibre Laminar Composite and Carbon Fibre Corrugated Sandwich Panel	64
Introduction	64
Experiment Layout	65
Split Hopkinson Pressure Bar	65
Specimen Manufacturing	65
Result and Discussion	65
Carbon Fiber Composites under out of Plane Dynamic Compression	65
Conclusion	66
References	66
11 Strain Rate Dependence of Stabilized, Nanocrystalline Cu Alloy	67
Introduction	67
Materials/Methods	67
Results	68
Discussions	70
Conclusion	70
References	71
12 Designing Future Materials with Desired Properties Using Numerical Analysis	72
Introduction	72
Software	72
Experimental Characterization	72
X-ray Computed Tomography	72
Discussion	73
References	74
13 Kolsky Bar Testing of Pressure Sensitive Adhesives	75
Introduction	75
General Methods	76
Sample Geometry Study	77
Pulse Shaping Study	78
Lubrication Study	82
Simulation	84
Conclusion	85
References	85
14 Full-Field Mechanical and Thermal Strain-Rate Dependence of CFRP Laminates	87
Introduction	87
Background	87
Analysis	88
Conclusion	89
Reference	89
15 Enhanced Energy Absorption Performance of Liquid Nanofoam-Filled Thin-Walled Tubes under Dynamic Impact	90
Introduction	90
Methods	91
Results	91
Conclusion	93
References	93
16 Effect of Heat-Treatment on Rock Fragmentation Using Dynamic Ball Compression Test	95
Introduction	95
Experiment	95
Analysis	96
Conclusion	98
References	98
17 Effect of Confining Pressure on the Dynamic Mode II Fracture Toughness of Rocks	99
Introduction	99
Experimental Methodology	99
Analysis	101
Conclusion	102
References	102
18 A Viscoelastic-Viscoplastic Characterization with Time Temperature Superposition for Polymer Under Large Strain Rates	103
Introduction	103
Time Temperature Superposition	104
Experiments	104
Conclusion	109
References	109
19 Tensile Hopkinson Bar Analysis of Additively Manufactured Maraging Steel	111
Introduction	111
Design	111
Calibration	112
Analysis	112
Conclusion	114
References	114
20 Large-Diameter Triaxial Kolsky Bar for Evaluating Very-High-Strength Concrete	115
Introduction	115
Background	115
Analysis	116
Conclusion	117
References	118
21 Dynamic Compressive Tests of Alumina Dumbbells Using a Spherical Joint	119
Introduction	119
Experimental	120
Results	122
Spherical Joint Tests with Ductile Metals	122
Alumina Dumbbell Compression Tests	123
Conclusions	126
References	126
22 Experimental Method for Mode I Dynamic Fracture Toughness of Composite Laminates Using Double Cantilever Beam Specimens	127
Introduction	127
Development of an Innovative Experimental Protocol	127
Conclusion	128
References	129
23 Numerical Study of Ring Fragmentation	130
Introduction	130
Simulation Setup	131
Results and Discussion	131
Conclusions	133
References	133
24 Development of a New Testing Method to Capture Progressive Damage in Carbon Fiber Reinforced Polymers Subject to a Simulated Lightning Strike	135
Introduction	135
Experimental Procedure	136
Sample Preparation	136
Resistive Heating	137
Acoustic Shock	137
Simulated Lightning Strike	138
Results	138
Conclusion	139
References	140
25 Overview of the First SHPB Experiments on Oriented Single Crystal Explosives	141
Introduction	141
Experimental Procedures	142
Results	143
Complications and Future Work	144
References	145
26 Hydrodynamic Richtmyer-Meshkov Instability of Metallic Solids Used to Assess Material Deformation at High Strain-Rates	147
Introduction	147
Background	148
Analysis	149
Conclusion	152
References	153
27 Combined Compression and Shear Impact Response of Polycrystalline Metalsat Elevated Temperatures	154
Introduction	154
Experimental Procedure	155
Results and Discussion	157
Summary	158
References	159
28 Dynamic Failure of Pure Tungsten Carbide Under Simultaneous Compression and Shear Plate Impact Loading	160
Introduction	160
Experimental Procedures	161
Material Preparation	161
Oblique Plate Impact Combined Compression-and-Shear Experiments	161
Experimental Results and Discussion	162
Analysis of the Equivalent Stress State in the Target Plate During the Oblique Plate Impact Experiment	163
Shear Stress versus Shear Strain Profiles Estimated from the Free Surface Transverse Particle Velocity Profiles Obtained from the Oblique Plate Impact Experiments	165
Conclusion	166
References	166
29 A Kolsky Bar with a 50 ns Rise-Time: Application to Rates Beyond 1 M/s	168
References	170
30 Strain Stiffening Effects of Soft Viscoelastic Materials in Inertial Microcavitation	171
Introduction	171
Physıcal Model	172
Bubble Dynamics with Viscoelastic Surroundings	172
Strain Stiffening Effects	172
Heat and Mass Transfer at the Bubble Wall	173
Boundary Conditions	173
Experımental Setup	174
Results and Discussıon	175
Conclusions	175
References	175
31 Assessment of Dynamic Fracture in Ultra-High Performance Concrete Using Synchrotron X-ray Source	176
Introduction	176
Background	177
Conclusion	178
References	178
32 High Rate Mechanical Characterization of Sensitized 5083-H131 Aluminum Alloy	179
Preliminary Testing	179
Results	179
Conclusion	181
References	181
33 Application of High-Speed Digital Image Correlation to Taylor Impact Testing	182
Introduction	182
Experimental	183
Results	185
Conclusion	187
References	187
34 Observation of Dynamic Adhesive Behavior Using High-Speed Phase Contrast Imaging	189
Introduction	189
Experiments	190
Results	190
References	191
35 Strain-Rate Effect on the Deformation Mechanisms of Agglomerated Cork	192
Introduction	192
Background	192
Material	192
Microstructure Characterization	193
Compressive Loadings at Several Strain-Rate Regimes	194
Analysis	195
Mechanical Behavior	195
Microstructure Influence	196
Conclusion	197
References	198
36 Dynamic Mechanical Behavior of Reinforced Cork Agglomerate	199
Introduction	199
Background	200
Analysis	201
Strain-Rate Effect on the Compressive Behavior	201
Reinforcement Effect on the Compressive Behavior	202
Conclusion	202
References	203
37 Use of Edge-on Impact Tests with Synchrotron-Based MHz Radioscopy to Investigate the Multiple Fragmentation Process in SiC Ceramics	204
Introduction	204
Silicon Carbide Tested in the Present Work	205
Edge-on Impact Experiments	205
Conclusion	206
References	207
38 Low Temperature Seawater Effects on the Mechanical, Fracture, and Dynamic Behavior of E-Glass and Carbon Fiber Laminates	208
Introduction	208
Materials	209
Results	209
39 Using the SURF Model to Simulate Fragment Impact on Energetic Materials	211
Introduction	211
Governing Equations	212
Calibration of Surf and Simulations	214
Conclusion	218
References	218

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