Experimental and numerical studies of ultra-high performance concrete …
DOI: 10.1016/J.ENGSTRUCT.2018.06.098 Corpus ID: 115198392; Experimental and numerical studies of ultra-high performance concrete targets against high-velocity projectile impacts
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Assessing the effectiveness of UHPFRC, FRHSC and ECC against high
High velocity projectile impact (HVPI) test was carried out on three classes of cement composites to assess their performance. The tests were conducted on thick block specimens using non-deformable ogive-nosed projectiles with a mass of 250 g and a diameter of 28 mm at approximately 400 m/s. ... Experimental and numerical studies of ultra-high ...
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Effect of bauxite aggregate in cement composites on …
DOI: 10.1016/j.cemconcomp.2020.103915 Corpus ID: 233072912; Effect of bauxite aggregate in cement composites on mechanical properties and resistance against high-velocity projectile impact
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IMPACT ROLLER TECH Construction Equipment For Sale
Browse a wide selection of new and used IMPACT ROLLER TECH Construction Equipment for sale near you at MachineryTrader. Top models include 3000H and 2000H.
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RESISTANCE OF CEMENT-BASED MATERIALS AGAINST HIGH-VELOCITY …
RESISTANCE OF CEMENT-BASED MATERIALS AGAINST HIGH-VELOCITY PROJECTILE IMPACT: Authors: ZHANG FENGLING: Keywords: Projectile impact, Deformable, Penetration depth, Hardness, Bauxite, Ultra-high performance concrete (UHPC), K&C model, Dynamic increase factor (DIF) Issue Date: 7-Dec-2020: Citation: ZHANG FENGLING (). …
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High-velocity impact experiments and quantitative damage …
As the impact of projectiles, aircraft, detonation fragments, and debris poses a possible threat to concrete structures, the penetration into concrete has already been investigated for a long time (Yankelevsky, 2017), with the considered impact velocities reaching the hypervelocity range (Atoua et al., 2013; Dawson et al., 2008).In addition to analytical …
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High-velocity impact of large caliber tungsten projectiles …
Impact experiments have been carried out on concrete slabs. The first group was traditionally manufactured, densely reinforced concrete targets, and the next were ordinary Portland and calcium aluminate cement based HPSFRC (High performance steel fiber reinforced concrete) and SIFCON (Slurry infiltrated concrete) targets. All specimens were hit by anti-armor …
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Low Velocity and High Velocity Impact Test on …
velocity impact, invisible cracks often occur, but they cannot be seen using the naked eye. It is important to understand the deformation and damage mechanisms involved in the impact of targets, for the effective design of composite structures. Keywords: Composite Materials,High Velocity Impact (HVI), Impact Damage, Low velocity Impact (LVI),
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High velocity impact dynamics
Introduction to Impact Phenomena (T. Nicholas & R. Recht) Material Failure at High Strain Rates (R. Woodward) Material Characterization at High Strain Rates (T. Nicholas & A. Rajendran) Introduction to Penetration Mechanics (J. Zukas) Long-Rod Penetration Mechanics (V. Hohler & A. Stilp) Analytical Models for Kinetic Energy Penetration (J. Zukas & W. Walters) High …
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High velocity impact on generic CFRP blade specimen: …
The first impact test was performed at 90 m s −1, that falls in the high velocity impact range. It is worth noting that high velocities are defined as impact with a velocity range from 50 m s −1 and above. Intermediate velocity impact is between 20 m s −1 and 50 m s −1, and below 10–20 m s −1 are defined as LVI .
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Resistance of cement-based materials against high-velocity …
DOI: 10.1016/j.ijimpeng.2020.103629 Corpus ID: 219756294; Resistance of cement-based materials against high-velocity small caliber deformable projectile impact @article{Zhang2020ResistanceOC, title={Resistance of cement-based materials against high-velocity small caliber deformable projectile impact}, author={Fengling Zhang and Leong Hien …
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Characteristics of high-performance steel fiber-reinforced concrete
1. Introduction. Development of modern civil engineering includes an urgent need to develop higher performance engineering materials possessing high strength, toughness, energy absorption, durability, etc. High-performance steel fiber-reinforced concrete (HPSFRC), which made remarkable advances during recent years [1], [2], is an important high performance …
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Grand Slam Secondary Impact Crushers
The Stedman Grand-Slam secondary impact crushers are built to handle thousands of materials, ores, and chemicals in wet and dry applications. The crushing action of the Grand-Slam HSI …
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Resistance of high-performance fiber-reinforced cement …
This paper presents experimental and numerical studies on the performance of seven high-performance fiber-reinforced cement-based composites against high velocity projectile impact (HVPI). The materials investigated involved four fiber-reinforced high-strength concretes (FRHSCs) with 28-day compressive strengths ranging from about 60 to 140 MPa, …
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Behaviour of Concrete Under High Velocity Impact
Behaviour of Concrete on High Velocity Impact 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Terminal Ballistics Research Laboratory,Defence Research &
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VERTICAL SHAFT IMPACTOR – PROPEL INDUSTRIES
Propel Vertical Shaft Impactor has been developed with inputs from aggregate producers. The high velocity impact crusher in Propel VSI enhances the shape of the aggregates and …
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Tensile Strength versus Toughness of Cement-Based
This paper presents a laboratory experimental study on the effect of tensile strength and toughness on the resistance of cement-based materials to high-velocity projectile impact.
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Ultra-high performance concrete targets against high velocity
For this purpose, we present the results of high-velocity impact experiments with spherical steel projectiles and finite-thickness UHPC targets of approximately 115 MPa compressive cylinder ...
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Experimental and numerical studies of ultra-high performance concrete …
Wu et al. [9] investigated the impact resistance of 35–142 MPa ultra-high performance cement based composites (UHPCC) with the additions of basalt aggregates and steel fibres through conducting the high-velocity impact tests with the broad striking velocities from 510 to 1320 m/s. In this study, influences of fibre content, basalt aggregate ...
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High-velocity impact of large caliber tungsten projectiles …
We present the numerical implementation, simulation, and validation of the high-velocity impact experiments that have been described in the companion article. In this part, numerical investigations and simulations performed to mimic the tests are presented. The experiments were analyzed by the explicit integration-based software ABAQUS for improved simulations.
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Damage characteristics of high-performance fiber-reinforced cement
The projectile impact test was performed by using a gas pressured high velocity impact system that consists of a high-pressure gas chamber, a launch tube, and a specimen holder, as shown in Fig. 1.Concrete panels having the same dimensions of width W = 200 mm and height H = 200 mm but four different thicknesses (40T, 50T, 60T, 70T) were considered.
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Impact Resistance of Ultra-High-Performance …
Ultra-high-performance concrete (UHPC) is a cement-based material with excellent impact resistance. Compared with traditional concrete, it possesses ultra-high strength, ultra-high toughness, and ultra-high durability, …
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Comparing The NP1415 & NP1620 HSI Crushers
Despite their differences, the NP1415 and NP1620 share many common design elements and benefits that make them reliable, low-maintenance crushers. Both models …
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Experimental and numerical investigations of low velocity impact
DOI: 10.1016/J.IJIMPENG.2009.08.006 Corpus ID: 137339639; Experimental and numerical investigations of low velocity impact behavior of high-performance fiber-reinforced cement based composite
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A review of high‐velocity impact on fiber‐reinforced textile …
1 INTRODUCTION. The addition of high-strength fibers and matrices allows the use of fiber-reinforced polymer textile composites in a wide range of aerospace industry applications, particularly aero engines, 1 due to their excellent material properties, such as high specific strength, specific stiffness, corrosion resistance, and fatigue resistance. . Since the first …
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Uncovering the Power: How Many Joules Does it Take to Break Concrete …
In the analysis of concrete breakage, the relationship between velocity and force plays a crucial role. When a force is applied to concrete at high velocity, the impact causes significant stress on the material. As the velocity increases, the kinetic energy also increases, resulting in a more forceful impact on the concrete surface.
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The origin of high-velocity impact response and damage …
Lee et al. present the mechanism of high-speed impact performance of bioinspired microstructural designs using high-throughput computational simulations. Results show that adding interfacial features such as waviness and incline can enlarge the damage area and help to effectively block the crack and stress wave propagation, leading to superior …
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Experimental and numerical investigations of low velocity impact
Fiber-reinforced concrete (FRC) has been used in structural applications in order to enhance the structural performance under dynamic loading and reduce cracking and spalling phenomena by increasing toughness, ductility, and tensile strength of the concrete. High-performance fiber-reinforced cement based composite (HPFRC) is a high-strength FRC …
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High-velocity impact of large caliber tungsten projectiles …
Targets were modeled with a damaged plasticity model for concrete. Computational results of residual velocity and crater dimensions yielded acceptable results. We present the numerical implementation, simulation, and validation of the high-velocity impact experiments that have been described in the companion article. In this part, numerical ...
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High-Velocity Impact Applications with Shear-Thickening …
High-velocity impact resistance can be classified as the impact with a range of velocities between 50 and 1000 m/s . The unique viscosity characteristics of STFs, which become stiffer under applied shear forces, make them suitable candidates for high-velocity impact-resistant applications. High-velocity impact resistance is an inherent property ...
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