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ballistic impact resistance
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Book: Composites
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003356
EISBN: 978-1-62708-195-5
... monomers and provides a discussion on acrylated epoxidized soybean oils (AESO), maleinized soyoil monoglyceride (SOMG/MA), and maleinized hydroxylated oil (HO/MA). The polymer properties of the AESO, SOMG/MA, and HO/MA are also discussed. The article explains the ballistic impact resistance of soy resin...
Abstract
This article describes the synthesis, manufacturing, and properties of both the neat soy-based resins and the glass, flax, and hemp composites. A tabulation of the fatty-acid distribution in various plant oils is provided. The article discusses synthetic pathways for triglyceride-based monomers and provides a discussion on acrylated epoxidized soybean oils (AESO), maleinized soyoil monoglyceride (SOMG/MA), and maleinized hydroxylated oil (HO/MA). The polymer properties of the AESO, SOMG/MA, and HO/MA are also discussed. The article explains the ballistic impact resistance of soy resin composites and concludes with a discussion on biodegradable composites.
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001418
EISBN: 978-1-62708-173-3
... vessels, armor plate, and components for marine and cryogenic service. The ballistic analysis of alloy 5083 is given in the section “Weld Properties” of this article. While these alloys normally exhibit good corrosion resistance, care must be taken during processing to avoid formation of continuous...
Book: Composites
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0009242
EISBN: 978-1-62708-195-5
... fiber is noted for its toughness and general damage tolerance characteristics ( Ref 24 ). In part, this is related directly to conventional tensile toughness, or the area under the stress-strain curve. Toughness is also related to composite impact resistance and ballistic stopping power ( Ref 25 , 26...
Abstract
The chemical composition of Kevlar aramid fiber is poly para-phenyleneterephthalamide. Para-aramid fibers belong to a class of materials known as liquid crystalline polymers. This article discusses the manufacture of aramid fibers and the major fiber forms, such as continuous filament yarns, rovings, woven fabrics, discontinuous staple and spun yarns, fabrics, and pulp. Key representative properties of para-aramid fibers are listed in a table. The article reviews the properties of aramid fibers, including tensile modulus, tensile strength, creep and fatigue, compressive properties, toughness, thermal properties, as well as electrical and optical properties. It concludes with a discussion on the environmental behavior of para-aramid fibers.
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003565
EISBN: 978-1-62708-180-1
... Abstract This article discusses the generic features of impact wear on metals, ceramics, and polymers. It describes normal impact wear and compound impact wear, as well as the features of impact wear testing apparatus such as ballistic impact wear apparatus and pivotal hammer impact wear...
Abstract
This article discusses the generic features of impact wear on metals, ceramics, and polymers. It describes normal impact wear and compound impact wear, as well as the features of impact wear testing apparatus such as ballistic impact wear apparatus and pivotal hammer impact wear apparatus. Most mechanical components continue to be functional beyond the zero wear limit, and their usefulness is normally connected with the loss of a specific depth of material. The article reviews the zero impact wear model and some measurable impact wear models. It presents a case study illustrating the impact of wear failure on automotive engine inlet valves and seat inserts.
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003566
EISBN: 978-1-62708-180-1
... when subjected to edge-to-surface impacts ( Fig. 8 ) than the nail hammers, a result McIntire and Manning attributed to the wider chamfer and also to a more slender handle possibly making the tool more shock resistant. The tinner's-setting hammers were the least resistant to spalling, lacking any...
Abstract
This article briefly reviews the analysis methods for spalling of striking tools with emphasis on field tests conducted by A.H. Burn and on the laboratory tests of H.O. McIntire and G.K. Manning and of J.W. Lodge. It focuses on the metallography and fractography of spalling. The macrostructure and microstructure of spall cavities are described, along with some aspects of the numerous specifications for striking/struck tools. The article also describes the availability of spall-resistant metals and the safety aspects of striking/struck tools in railway applications.
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
... In the case of impacting bodies, the white layer builds up on the wear surface as impacts progress and becomes intensely work hardened. As a result, microcracks are easily nucleated within the white layer material ( Fig. 8a ). The path of least resistance along which the cracks can propagate...
Abstract
Impact or percussive wear is defined as the wear of a solid surface that is due to percussion, which is a repetitive exposure to dynamic contact by another body. Impact wear, however, has many analogies to the field of erosive wear. The main difference is that, in impact wear situations, the bodies tend to be large and contact in a well-defined location in a controlled way, unlike erosion where the eroding particles are small and interact randomly with the target surface. This article describes some generic features and modes of impact wear of metals, ceramics, and polymers. It discusses the processes involved in testing and modeling of impact wear, and includes two case studies.
Book Chapter
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006730
EISBN: 978-1-62708-210-5
... mechanical properties physical properties transverse impact toughness Alloy 7039 ( Table 1 ) contains about 4% Zn and 2.8% Mg with small additions of Cr and Mn. Its high tensile strength provides high resistance to penetration by projectiles, and it’s primary application is armor plate, although other...
Book Chapter
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006359
EISBN: 978-1-62708-192-4
... that was caused by rock drill bits. The work of Sorokin ( Ref 9 ), one of several Soviet industrial wear investigators, is also worth citing. Bayer, Engel, and their coworkers ( Ref 10 , 11 ) constructed impact wear test equipment, of both the ballistic projectile ( Fig 2a ) and pivotal hammering type ( Fig...
Abstract
Impact wear can be defined as the wear of a solid surface that is due to percussion, which is a repetitive exposure to dynamic contact by another solid body. This article discusses the volume (or mass) removal of material either at or under engineering contact stress levels and outlines a rational, semi-empirical impact wear theory. It illustrates a linear wear mechanism that occurs in print heads and repetitive impacts that take place in metallic machine contacts. The article concludes with information on plotting a wear curve for an originally plane, massive carbon steel machine platen subjected to repetitive compound impact by a hard, nonwearing spherical-ended steel alloy component.
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006951
EISBN: 978-1-62708-439-0
...-021-06841-w 48. Ramadani R. et al. , Topology Optimization Based Design of Lightweight and Low Vibration Gear Bodies , Artic. Int. J. Simul. Model. , Vol 17 , 2018 , p 92 – 104 , 10.2507/IJSIMM17(1)419 49. Zochowski P. et al. , Ballistic Impact Resistance...
Abstract
This article provides an introduction to architected cellular materials, their design, fabrication, and application domain. It discusses design decisions involving the selection, sizing, and spatial distribution of the unit cell, property-scaling relationships, and the integration of cells within an external boundary. It describes how manufacturing constraints influence achievable feature resolution, dimensional accuracy, properties, and defects. It also discusses the mechanical behavior of architected cellular materials and the role of additive manufacturing in their fabrication.
Book: Composites
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003444
EISBN: 978-1-62708-195-5
... structures, assuming common design practices are employed such that damage incurred is typical of relatively balanced laminates of reasonable quality and integrity. This testing, known as compression after impact (CAI) testing, is used widely in the aerospace industry to gage damage tolerance potential...
Abstract
This article explores why structural element and subcomponent testing are conducted. It discusses the different types of failure modes in composites, and provides information on the testing methodology, fixturing, instrumentation, and data reporting. The article reviews various standard elements used to characterize composite materials for the various failure modes. Simple structural-element testing under in-plane unidirectional, multidirectional, and combined loading, as well as out-of-plane loading are discussed. Simple bolted and bonded joints, as well as data correlation are reviewed with analytical predictions. The article also provides a list of the ASTM testing standards applicable at the element level of testing for both polymer-matrix composites and metal-matrix composites. It concludes with a discussion on durability and damage tolerance testing.
Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003038
EISBN: 978-1-62708-200-6
..., have the potential to provide the highest specific strength available. The impact resistance of organic fiber reinforced composites is quite high, making them suitable for energy absorption applications, such as ballistic shielding. The impact resistance of carbon fibers is generally low...
Abstract
Pultrusion is an automated process for manufacturing composite materials into continuous, constant cross-sectional profiles. The article provides an overview of the pultrusion process and the wide range of materials that can be used to provide a broad spectrum of composite properties. It discusses the mechanical, physical and material properties of pultruded products, and the orientation options available to utilize the properties advantageously. The article also provides guidelines for designing pultruded products.
Book Chapter
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003295
EISBN: 978-1-62708-176-4
... in materials is often inhomogeneous when materials are subjected to high strain rates and strains in various situations such as high-speed cutting, forging processes, ballistic impact, and crash behavior of structures. These very complex loading conditions at high strain rates may lead to localized regions...
Abstract
This article reviews the dynamic factors, experimental methods and setup, and result analysis of different types of high strain rate shear tests. These include high strain rate torsion testing, double-notch shear testing and punch loading, drop-weight compression shear testing, thick-walled cylinder testing, and pressure-shear plate impact testing.
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006431
EISBN: 978-1-62708-192-4
..., the wear is in accordance with a high abrasive resistance and high hardness, and is thus very low. Fig. 3 Erosive wear rate depending on the impact angle of a particle. With brittle materials, a 90° angle is the most detrimental. The literature further indicates two types of theories...
Abstract
There are huge numbers of publications and data available on ceramics, especially the basic types that cover their friction, wear, tribological mechanisms, high-temperature behavior, tribochemistry, and also lubrication conditions. This article summarizes the key overall research findings found in several comprehensive monographs. It discusses the types and properties of structural ceramics, as well as typical properties that govern the friction and wear of ceramics. The article reviews the superlow friction of silicon nitride and silicon carbide, and describes wear-protective hydrated tribochemical layers. It concludes with information on the tribological applications of structural ceramics and composites.
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003304
EISBN: 978-1-62708-176-4
... the shear wave velocity is approximately half the longitudinal wave velocity, a thin film with very low shear resistance needs to be added to the flyer plate such that the arrival of the unloading shear wave, to the impact surface, precedes the arrival of the unloading longitudinal wave generated...
Abstract
Impact tests are used to study dynamic deformation and failure modes of materials. This article discusses low-velocity impact experiments in single-stage gas guns. It describes surface velocity measurements with laser interferometric techniques. The article details plate impact soft-recovery experiments, pressure-shear friction experiments, and low-velocity penetration experiments. It reviews two types of plate impact soft-recovery experiments: normal plate impact and pressure-shear plate impact experiments. The article provides information on low-velocity penetration experiments, which include the setup for direct penetration experiment (rod-on-plate) and the reverse penetration experiment (plate-on-rod). It also considers high-temperature plate impact testing and impact techniques with in-material stress and velocity measurements.
Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003033
EISBN: 978-1-62708-200-6
... fabric, carbon versus glass, glass versus aramid, and so forth. Glass Fibers Glass fibers are unique materials that exhibit the familiar bulk glass properties of hardness, transparency, resistance to chemical attack, stability, and inertness, as well as fiber properties of strength, flexibility...
Abstract
This article addresses the types, properties, forms, and applications of fibers that are available for use in fiber-reinforced polymeric matrix composites, including glass, graphite, carbon, aramid, boron, silicon carbide, ceramic, continuous oxide and discontinuous oxide fibers. It describes the functions, types, and chemical composition of fiber sizing agents. The article discusses the styles, properties, applications, and weaving methods of unidirectional, two-directional and multidirectionally reinforced fabrics. The article also reviews the use of prepreg resins in aerospace and lower performance applications.
Book: Composites
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003485
EISBN: 978-1-62708-195-5
... that power the Boeing 777 aircraft, was the first commercial aerospace production application of DRA. The DRA components have demonstrated a seven- fold reduction in erosion rate and significant increase in resistance to ballistic damage from foreign objects, such as hailstones. A dramatic reduction...
Abstract
The primary motivation for the insertion of metal-matrix composites (MMCs) into aeronautical systems is the excellent balance of specific strength and stiffness offered by MMCs. This article provides information on the aerostructural, aeropropulsion, and aeronautical subsystem applications of MMCs. The applications include ventral fin, fuel access door covers, helicopter blade sleeve, fan exit guide vane, nozzle actuator piston rod, nozzle actuator links, T-1 racks, and hydraulic manifold.
Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003101
EISBN: 978-1-62708-199-3
... elongation and reduction of area, and by impact resistance or energy absorbed in a notched impact test. However, in recent years the property of fracture toughness has become a significant factor in the acceptance of steels for critical high-performance structural applications. The designation ultrahigh...
Abstract
Ultrahigh-strength steels are designed to be used in structural applications where very high loads are applied and often high strength-to-weight ratios are required. This article discusses the composition, mechanical properties, processing, product forms, and applications of commercial structural steels capable of a minimum yield strength of 1380 MPa (200 ksi). These include medium-carbon low-alloy steels, such as 4340, 300M, D-6a and D-6ac steels; medium-alloy air-hardening steels, such as HI1 modified steel and H13 steel; high fracture toughness steels, such as HP-9-4-30, AF1410, and AerMet 100 steels; and maraging steels.
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006433
EISBN: 978-1-62708-192-4
... composites ceramics coatings composites erosion-resistant coatings metal matrix composites metals microstructure polymer matrix composites solid particle erosion steel SOLID PARTICLE EROSION (SPE) is the loss of material that results from repeated impact of solid particles energized...
Abstract
Solid particle erosion (SPE) is the loss of material that results from repeated impact of solid particles energized in a carrier fluid. This article reviews important SPE variables, their effects for different classes of materials, composites and coatings, and the mechanisms and theories proposed to explain SPE. It discusses the SPE of metals, steels, and ceramics, as well as erosion of alloys with coarse, nominally two-phase microstructures in which the second-phase particles (SPPs) are typically large compared with the dimensions of the damage zone created by the impact of one particle. The article summarizes the erosion characteristics of polymer matrix composites (PMCs), metal matrix composites (MMCs), ceramic matrix composites (CMCs), and erosion-resistant coatings. The combination of parameters included in most erosion models is also summarized.
Book Chapter
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003294
EISBN: 978-1-62708-176-4
... forming, earthquakes, blast loading, structural impacts, terminal ballistics, and metalworking. This introductory article briefly reviews the dynamic factors and experimental methods for high strain rate tension testing and compression testing methods listed in Table 1 . Considerable data on the high...
Abstract
This article reviews high strain rate compression and tension test methods with a focus on the general principles, advantages, and limitations of each test method. The compression test methods are cam plastometer test, drop tower compression test, the Hopkinson bar in compression, and rod impact (Taylor) test. The flyer plate impact test, expanding ring test, split-Hopkinson bar in tension, and a test using a rotating wheel used for high strain rate tension are also discussed.
Book: Composites
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003350
EISBN: 978-1-62708-195-5
... wear, impact and blast resistance, and fire resistance. The final category of fiber architecture is that formed by weaving, braiding, or knitting the fiber bundles or “tows” to create interlocking fibers that often have orientations slightly or fully in an orientation orthogonal to the primary...
Abstract
This article begins with a brief history of composite materials and discusses its characteristics. It presents an introduction to the constituents, product forms, and fabrication processes of composite materials. The article concludes with a discussion on the applications of organic-matrix, metal-matrix, and ceramic-matrix composites.
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