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drop weight testing

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003025
EISBN: 978-1-62708-200-6
... sharp melting points. Unfilled polyamide (PA) typically is self-extinguishing on some flammability tests because the portion that burns also melts, and the flaming portion drops away, leaving an extinguished remainder. With the addition of glass fiber, the ignited sample is held together by the fiber...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... Vickers hardness testers. (a) Principal components of a mechanical type. (b) Modern Vickers tester with digital readout of diagonal measurements and hardness values The Scleroscope hardness test is essentially a dynamic indentation hardness test, wherein a diamond-tipped hammer is dropped from a...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003030
EISBN: 978-1-62708-200-6
... impacting carborundum grit ( Ref 9 ). A flat sample is held at 45° and struck with increasing amounts of No. 80 silicon carbide dropped from a height of 635 mm. The relatively mild airborne abrasive action is similar to that encountered by many items in actual use, and correlation with field experience has...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005683
EISBN: 978-1-62708-198-6
... low, there is also a negligible potential drop due to the solution resistance between the reference and tested electrodes, and the distance between them in the common test cells and for small or macroscopically homogeneous electrodes can be ignored in the tests discussed here. If the electrodes are...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003243
EISBN: 978-1-62708-199-3
... step-load test provides a stress intensity that is different at each load but remains constant with crack extension as each load level is sustained. Crack initiation is signaled by a drop in load ( Fig. 18 ). The rising step-load test was developed as an accelerated low-cost test to measure resistance...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006026
EISBN: 978-1-62708-172-6
... same as those that were originally tested and prequalified. Examples of tests that can be performed include infrared spectroscopy (generic fingerprint analysis), density, solids by weight and volume, percent pigment, viscosity, volatile organic compound content, fineness of grind, flash point...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003026
EISBN: 978-1-62708-200-6
... specimen or a capacitor is determined from a measurement of either the current or the voltage drop under specified conditions. With the appropriate electrode systems, surface and volume resistance or conductance can be measured separately. The resistivity or conductivity can then be calculated when the...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006063
EISBN: 978-1-62708-172-6
... sample with electrons. When electrons bombard the sample, a resultant input of energy causes the inner-shell electrons to be released as a form of energy. Consequently, one of the outer-orbital electrons drops to the lower valence level to stabilize the vacancy created within the atomic shell. The change...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
... Abstract This article describes testing and characterization methods of ceramics for chemical analysis, phase analysis, microstructural analysis, macroscopic property characterization, strength and proof testing, thermophysical property testing, and nondestructive evaluation techniques...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.9781627081764
EISBN: 978-1-62708-176-4
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009011
EISBN: 978-1-62708-185-6
... the torsion axis should be equal to the shear strain corresponding to that value of twist at which the torque-twist record shows a sudden drop, indicating fracture. The fracture strains measured in torsion are highly reproducible and provide a good quantitative measure of the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003064
EISBN: 978-1-62708-200-6
... carbon fibers has dropped and their mechanical properties have increased. This article begins with an overview of the carbon conversion processes, fiber properties and microstructures, and interfacial bonding and environmental interaction of carbon fibers, followed by a detailed discussion on the various...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... nonferrous metals. The article reviews the various types of forming processes such as blanking, piercing, fine-edge blanking, press bending, press forming, forming by multiple-slide machines, deep drawing, stretch forming, spinning, rubber-pad forming, three-roll forming, contour roll forming, drop hammer...
Book Chapter

Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001274
EISBN: 978-1-62708-170-2
... coatings as base for paint application JIS K 5400 … … General testing methods for coatings 6.11 … Impact test (uses 300 g, or 0.7 lb, weight dropped from 1000 mm, or 40 in., height) 6.12 … Flexibility test (bending over a 3 mm, or 0.12 in., diameter mandrel) JIS Z 0228 … … Wetting...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009021
EISBN: 978-1-62708-187-0
... of metal that must pass through it. Thus, the metal broke into separate streams and trickled down to various points on the periphery of the plate section. Such separate streams oxidized rapidly and resulted in misruns, cold shuts, and “BB shot”. (The BB-shot defect refers to drops of molten metal...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005337
EISBN: 978-1-62708-187-0
... shipments dropped precipitously as golf club production moved to low-cost countries after 1997. Shipments have been increasing since 2003 due to increased production demand for industrial castings. Fig. 1 United States titanium casting shipments from 1978 to 2003. Source: Ref 4 The titanium...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001273
EISBN: 978-1-62708-170-2
... metal is ladled in one continuous pour directly, or through a preheated trough, into the spinning shell. Water cooling should be started immediately after pouring is completed, and the bearing rotation should continue until the assembly temperature drops to around 150 °C (300 °F). At this point, the...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005252
EISBN: 978-1-62708-187-0
... to the pattern is called the investment, and hence, the operation is called the investment cycle. When the desired shell thickness is obtained, the pattern is inverted, allowing the excess resin-sand mixture to drop back into the container. While still on the heated pattern, the investment (now...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003175
EISBN: 978-1-62708-199-3
... carefully planned to avoid “waterfalling,” the dropping of liquid metal from a higher to a lower level in the mold, and the resulting oxidation of newly created metal surface. By filling the mold from the bottom, the oxide layer on the top of the liquid metal will rise to the top of the cope surface and...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003101
EISBN: 978-1-62708-199-3
... HP-9-4-30 steel is available as billet, bar, rod, plate, sheet, and strip. It has been used for aircraft structural components, pressure vessels, rotor shafts for metal forming equipment, drop hammer rods, and high-strength shock-absorbing automotive parts. The steel AF1410 was an outgrowth of...