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Clamping damage

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030023
EISBN: 978-1-62708-349-2
... discontinuous or continuous fibers. The sample preparation methods cover documentation and labeling of samples, sectioning the composite, clamp-mounting composite samples, mounting composite samples in casting resins, and the addition of contrast dyes to casting resins. Information on the molds used...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870517
EISBN: 978-1-62708-314-0
..., injection, bolted, or bonded, as shown in Fig. 19.1 . Simple fill repairs are conducted with paste adhesives to repair such nonstructural damage as minor scratches, gouges, nicks, and dings. Injection repairs use low-viscosity adhesives that are injected into composite delaminations or adhesive unbonds...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040030
EISBN: 978-1-62708-428-4
... a rotating cut-off wheel in which the impregnated specimen is first clamped firmly in the machine grips. As there is a substantial force exerted by the cut-off blade through the specimen, rigid clamping on the coating sample is necessary to avoid sample walking and coating damage that may be triggered...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870307
EISBN: 978-1-62708-314-0
..., it is important to use a sharp drill bit, which will not wander as easily as a dull one; drilling is faster; and lower forces are required, minimizing the possibility of injury or part damage. When drilling multimaterial stack-ups, it is important to make sure that they are securely clamped together...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060223
EISBN: 978-1-62708-343-0
... constantly. The next generations of machines must last longer and possess higher performance capabilities. A common approach is to decrease weight and size while pushing up stresses and strains that are a root cause of mechanical damage. Materials must be designed to resist higher stresses and strains...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400169
EISBN: 978-1-62708-258-7
... exposure to rain and humidity would cause immediate and damaging surface oxide contamination. There are metallographic procedures available to remove oxidation from a specimen surface. These procedures are discussed in the next section. Because of oxidation, metallographic specimens are always stored...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ceeg.t59370059
EISBN: 978-1-62708-447-5
... to meet the following requirements: Rigidity—limited deflection without mold damage during lifting and reversal Strength—ability to withstand forces of clamping and weighing down against the buoyancy of the liquid metal Accuracy—close matching between two halves Ruggedness—ability...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500289
EISBN: 978-1-62708-317-1
... of the joining procedure. Source: Ref 14.7 To simulate crack generation in the riveting process, a damage criterion is necessary. The damage value is based on a macromechanical integral value and is calculated from maximum principal stress and effective strain. This is implemented in the simulation...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290207
EISBN: 978-1-62708-306-5
...-shear joint ( Fig. 8.4b ) is the much preferred. Single-shear joints ( Fig. 8.4a ) cause problems due to the eccentric load path causing fastener rotation ( Fig. 8.5 ). Fastener cocking during loading can result in point loading and lead to progressive damage during fatigue cycling. Therefore, double...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ceeg.t59370167
EISBN: 978-1-62708-447-5
... Abstract This chapter provides an overview of aluminum die casting and the equipment used. It discusses the advantages and limitations of the die casting process and the design and operation of hot- and cold-chamber die casting machines. It also discusses clamping systems and forces...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610263
EISBN: 978-1-62708-303-4
... Abstract This chapter discusses the fatigue behavior of bolted, riveted, and welded joints. It describes the relative strength of machined and rolled threads and the effect of thread design, preload, and clamping force on the fatigue strength of bolts made from different steels. It explains...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720161
EISBN: 978-1-62708-305-8
... specimens. The outer clamp edges must be beveled to minimize damage to polishing cloths. If clamps are improperly used so that gaps exist between specimens, fluids and abrasives can become entrapped and will seep out obscuring edges. The problem can be minimized by proper tightening of clamps, by use...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030067
EISBN: 978-1-62708-349-2
... of titanium honeycomb sandwiched between polymer-matrix carbon fiber composite facesheets. The open and thin walls of the titanium honeycomb require a special mounting technique. This combination of materials cannot be prepared unmounted or by clamping alone. If this is attempted, the titanium foil...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630117
EISBN: 978-1-62708-270-9
.... Indeed, the accumulation of microchanges over a large number of load applications, called cumulative damage , has been the subject of study over the years ( Ref 3 ). Study of the cumulative damage concept seeks to predict or estimate fatigue life of a particular part or structure but is handicapped...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500179
EISBN: 978-1-62708-317-1
... halves. The parting plane must be designed and finished so that the die is not damaged even when the maximum clamping load is applied without the presence of internal pressure. The position of the parting line and the orientation of the die geometry must be such that it does not create pinching...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850060
EISBN: 978-1-62708-260-0
.... The flow pattern should be checked periodically, since hoses can become clogged with cutting debris. Improper cutting technique can result in specimen damage and wheel breakage. Loose clamping of samples is a prime cause of wheel breakage. Excessive initial pressure, especially if the surface...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720085
EISBN: 978-1-62708-305-8
... the stationary types. The tester attaches to the workpiece as would a C-clamp with the anvil on one side of the workpiece and the indenter on the other. For very large parts, an encircling chain is used to hold the tester in place as pressure is applied. Fig. 4 Hydraulic, manually operated portable...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870449
EISBN: 978-1-62708-314-0
... include: Bearing : Bearing failures are characterized by localized damage, such as delaminations and matrix crazing around the hole. Localized compression loading caused by the fastener leads to buckling and kinking of the fibers followed by crushing of the matrix. Shear-out : Shear-out...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030043
EISBN: 978-1-62708-349-2
... in holding or clamping. This will be dictated by automated mount head openings and the clamping apparatus or by the ability to hold and control the sample by hand. Following the rough grinding step, the sample(s) should be ready for rough polishing. Rough polishing further removes the specimen surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
... cross-threading or thread damage. The roots and crests of threads should be rounded to reduce stress concentrations as well as to help mold filling. Internal threads can be formed by collapsible cores or unscrewing cores. External threads can be formed by split cores or unscrewing devices. All...