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ballistic impact wear apparatus

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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...
Image
Published: 31 December 2017
Fig. 7 Compound impact wear of carbon-steel projectiles tested in ballistic impact wear apparatus. Projectiles 8 are carbon steel, HRC = 20, V8 (δ ≃ 0.5 μm, or 20 (μin.), m = 1.27 g (0.045 oz), R = 140 mm (5.5 in.), V = 1.7 m/s (68 in./s); target disk is alloy steel 4140, HRC = 40 to 45 More
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
... Compound impact wear of carbon-steel projectiles tested in ballistic impact wear apparatus. Projectiles 8 are carbon steel, HRC = 20, V8 (δ ≃ 0.5 μm, or 20 (μin.), m = 1.27 g (0.045 oz), R = 140 mm (5.5 in.), V = 1.7 m/s (68 in./s); target disk is alloy steel 4140, HRC = 40 to 45, V16, μ = 0.62...
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
... different types of test rigs have been developed for impact wear studies: ballistic impact testers and reciprocating hammer testers ( Ref 13 ). The following describes the features of each. Ballistic Impact Wear Apparatus In ballistic impact wear testers, repetitive impacts are achieved by firing...
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
... contact. Hence, the spalling of gear teeth and bearing materials is also known as fatigue wear or rolling contact fatigue. Spalling damage on a surface can also occur from impact events. For example, the spalling of striking/struck tools is of considerable interest from the engineering, economic...
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
..., ρ P is the density of the erosive particle, U P is the particle velocity, f (α) is the angle of impact dependency function, and ε c is the critical plastic strain at which detachment of wear debris occurs. The erosion dependency on hardness for brittle surfaces is more complex with theories...
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
... 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...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003256
EISBN: 978-1-62708-176-4
... of plastics include the short-term tensile test, the compressive strength test, the flexural strength test, and the heat deflection temperature test. The most commonly used tests for impact performance of plastics are the Izod notched-beam test, the Charpy notched-beam test, and the dart penetration test. Two...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001290
EISBN: 978-1-62708-170-2
..., increase as the energy increases because of greater displacement damage ( Ref 10 , 11 , 12 ). Minimal absorption is obtained at energies below 500 eV. Therefore, for films intended for environmental protection, wear resistance, decorative coatings, and similar applications, a slight advantage might...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
.... The article describes testing methods such as room and high-temperature strength test methods, proof testing, fracture toughness measurement, and hardness and wear testing. It also explains methods for determining thermal expansion, thermal conductivity, heat capacity, and emissivity of ceramics and glass...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.9781627082907
EISBN: 978-1-62708-290-7
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006862
EISBN: 978-1-62708-392-8
... 61 ). The droplet impact and binder infiltration are the leading causes for printing defects; high droplet impact may cause ejection of the fine powders from their original position (ballistic ejection) ( Ref 62 ), while slow binder infiltration leads to droplet coalescence on the powder-bed surface...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006510
EISBN: 978-1-62708-207-5
... by either inert gas welding arcs or fluxes. However, the thicker oxide should be reduced using chemical or mechanical means prior to welding. Thermal treatments and moist storage conditions increase oxide thickness, as will electrochemical anodizing treatments applied for ornamental, architectural, and wear...