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oscillating shears

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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005619
EISBN: 978-1-62708-174-0
... Abstract Ultrasonic welding (UW), as a solid-state joining process, uses an ultrasonic energy source and pressure to induce oscillating shears between the faying surfaces to produce metallurgical bonds between a wide range of metal sheets and wires. This article reviews the models...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001384
EISBN: 978-1-62708-173-3
... also provides the means (that is, either pneumatic, hydraulic, or mechanical) to clamp the workpieces. The transducer assembly also incorporates components or waveguides to transmit the energy to the desired weld area. Ultrasonic welding products a weld by oscillating shear forces...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006490
EISBN: 978-1-62708-207-5
.... The process has wide application in the automotive, aerospace, and fabrication industries, to name a few. The term laser stir welding was coined by the authors to describe a process in which the laser keyhole or vapor cavity is manipulated or oscillated at a relatively high rate within the larger molten...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005103
EISBN: 978-1-62708-186-3
.... There are several different types of flying shear lines such as rocker (flying die), rotary drum, and oscillating. The lines are designed to shear metal strip or sheet in a way to synchronize a speed match with the moving metal. Because the shear action matches the speed of the moving strip, sheet, or plate...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002474
EISBN: 978-1-62708-194-8
..., degree γ R Zero-wear factor μ Coefficient of friction v Poisson's ratio σ y Tensile yield stress, psi τ max Maximum shear stress in contact region, psi τ y Shearing yield stress, psi (τ y = σ y /2) ϕ Total angular travel for one oscillation cycle, degree/cycle Note...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003236
EISBN: 978-1-62708-199-3
...: corrosion, fatigue cracks Fig. 2 Sectional views of five types of search units used in ultrasonic inspection. (a) Straight-beam (longitudinal-wave) contact. (b) Angle-beam (shear-wave) contact. (c) Dual-element contact. (d) Delay-tip (stand-off) contact. (e) Immersion The selection...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003236
EISBN: 978-1-62708-199-3
... Fig. 2 Sectional views of five types of search units used in ultrasonic inspection. (a) Straight-beam (longitudinal-wave) contact. (b) Angle-beam (shear-wave) contact. (c) Dual-element contact. (d) Delay-tip (stand-off) contact. (e) Immersion The selection of a transducer depends very much...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006470
EISBN: 978-1-62708-190-0
... shows particle oscillation, wave-front, direction of wave travel, and the wavelength, λ, corresponding to one cycle. Fig. 5 Schematic of transverse (shear) waves. The wavelength, λ, is the distance corresponding to one complete cycle. Unlike longitudinal waves, transverse waves cannot...
Book Chapter

Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006474
EISBN: 978-1-62708-190-0
... electronic phase detection is used to produce the hologram; that is, the required interaction (mixing) between the piezoelectrically detected object-beam signal and the simulated reference-beam signal occurs in the electronic domain. A pulser circuit (consisting of a continuous-wave oscillator and a pulse...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002372
EISBN: 978-1-62708-193-1
... depends on the coefficient of friction (due to adhesive forces between, and interpenetration of, asperities), the local load, asperity geometry, the elastic moduli of the two surfaces, and the amplitude of relative displacement. If the amplitude of oscillation is small, the shear strains are elastic...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003316
EISBN: 978-1-62708-176-4
...: initial conditions of surface adhesion, oscillation accompanied by the generation of debris, and fatigue and wear in the region of contact. Fretting wear occurs from repeated shear stresses that are generated by friction during small-amplitude oscillatory motion or sliding between two surfaces pressed...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003279
EISBN: 978-1-62708-176-4
.... Unlike other mechanical properties, such as the elastic constants or shear strength, properties of adhesion, friction, and wear depend strongly upon the surface conditions of the solid and not exclusively upon its bulk structure. The selection of appropriate test methods to meet engineering requirements...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006460
EISBN: 978-1-62708-190-0
... on an electrically excited mechanical oscillator that only could give short pulses and high frequencies by damping the oscillation. By comparison, in laser-ultrasonics the range of ultrasonic frequencies could be very high because very short ultrasonic pulses can be obtained by using short-pulse generation lasers...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003296
EISBN: 978-1-62708-176-4
.... , Recovery Experiments for Adiabatic Shear Localization: A Novel Experimental Technique , Trans. ASME , Vol 66 , 1999 , p 10 – 20 10.1115/1.2789137 24. Chen W. and Ravichandran G. , Static and Dynamic Compressive Behavior of Aluminum Nitride under Moderate Confinement , J. Amer...
Book Chapter

By P.H. Shipway
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006414
EISBN: 978-1-62708-192-4
...” and “contact fatigue.” Fatigue cracks can also be initiated where contacting surfaces are under a very heavy normal load, or where there is a static tensile stress in one of the surfaces. There are cases where the movement is not simply tangential, but is complicated by the normal force also oscillating...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005296
EISBN: 978-1-62708-187-0
..., provided many improvements in the process, in particular the introduction of the oscillating-mold system to prevent the casting from sticking to the mold. Further development of the process for the casting of nonferrous metals continued, including the installation of processing units in North America. Mold...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003308
EISBN: 978-1-62708-176-4
... is the determination of the fracture appearance transition curve. The “average” percent shear area of the broken specimens is determined for the fracture area neglecting a region “one thickness” in length from the root of the notch and “one thickness” from the opposite side of the specimen. These regions are ignored...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005149
EISBN: 978-1-62708-186-3
... University , Hamilton, Ontario, Canada , 1973 , p 84 – 91 46. Miyauchi K. , Stress-Strain Relationship in Simple Shear of In-Plane Deformation for Various Steel Sheets , Efficiency in Sheet Metal Forming, Proc. 13th Biennial Congress (Melbourne, Australia), International Deep Drawing...
Book Chapter

By Peter J. Blau
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003242
EISBN: 978-1-62708-199-3
... of Petroleum and Non-Petroleum Hydraulic Fluids in a Constant Volume Vane Pump Mass loss D 2981 Test Method for Wear Life of Solid Lubricants in Oscillating Motion Number of revolutions to failure, as indicated by friction D 3702 Test Method for Wear Rate of Materials in Self-Lubricated Rubbing...
Book Chapter

By Peter J. Blau
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003242
EISBN: 978-1-62708-199-3
... at high spots (asperities) that are subsequently sheared off. While factors other than adhesion may be involved, it is so historically ingrained in the tribology literature that it will be used here for convenience to describe sliding wear other than the other than abrasive, fretting, fatigue...