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Article
Adhesion of a Rigid Cylinder to an Incompressible Film
The adhesion between a rigid cylindrical particle with a flat end of radius a and an incompressible elastic film of thickness h deposited on a rigid substrate was studied. The contact surfaces between the particl...
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Article
Deformation behavior of tin and some tin alloys
Plastic deformation, creep and deformation twinning of β-tin and some tin alloys related to Pb-free solder applications are reviewed. The results are summarized and evaluated among conflicting findings and con...
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Chapter
Deformation behavior of tin and some tin alloys
Plastic deformation, creep and deformation twinning of β-tin and some tin alloys related to Pb-free solder applications are reviewed. The results are summarized and evaluated among conflicting findings and conclu...
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Article
Laparoscopic total colectomy for colorectal cancers: a comparative study
No previous report could be found in the literature comparing laparoscopic and open total colectomy for colorectal cancers, especially synchronous colorectal cancers. This study aimed to compare the short-term...
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Article
Impression creep of a viscous layer
Impression creep of a flat-ended cylindrical punch pushed into a viscous layer overlaid on a rigid substrate is analyzed. The method developed here permits us to relate the impression velocity to the punching ...
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Article
Scratching Behavior of Poly(N-Butyl Acrylate) Films
Scratch testing was performed on the poly(n-butyl acrylate) (PnBA) films using a spherical indenter. For the uncrosslinked PnBA film, the horizontal force during scratching increases with the normal load and h...
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Article
Dam** of fluid infiltrated nanoporous media: Part I. Loss tangent
Mechanical dam** behavior of Corning Vycor porous glass, code 7930, fully and partially saturated with water, was studied. This porous glass had 28% volume porosity, 2.3 nm average pore radius, and 207 m2yg ...
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Article
Dam** of fluid infiltrated nanoporous media: Part II. Relaxation time
For water confined in a nanoporous glass, the dam** behavior is studied further. Specifically, this paper reports how the water transport process depends on temperature, specimen thickness, pore size, and wa...
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Article
Impression recovery of PMMA
Impression recovery in which the deformation temperature is the same as recovery temperature is studied for the first time. PMMA is deformed by impression above the glass transition temperature to a depth of l...
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Article
Contact Area Evolution During an Indentation Process
The evolution of the contact area during an indentation process has been examined by an ac technique and also by finite element analysis on five mechanically different materials. Constant contact area regimes ...
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Article
Stress relaxation and creep in an impression test
A localized stress relaxation technique is described suitable for testing miniature structures and components. The actual size of the area that can be tested depends on the size of the indenter and the sensiti...
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Article
Impression recovery of amorphous polymers
The impression made by a loaded cylindrical flat-end punch on a polymer surface was observed to disappear with time at the same temperature after the load was removed. The depth-time relation appeared to obey ...
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Article
Finite element analysis of a subsurface crack
The problem of a subsurface crack parallel to the surface of a half space was studied by the finite element method. Without using the interface or gap elements over the crack faces, the crack faces would penet...
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Article
Evolution of the Contact Area During an Indentation Process
The evolution of the contact area during an indentation process has been examined by an a.c. technique and also by finite element analysis on five different bulk materials. The consistency of the results obtai...
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Article
Stick-slip in the scratching of styrene-acrylonitrile copolymer
Stick-slip process occurred during the scratch test of styrene-acrylonitrile copolymer. For the first time, a bamboo-like morphology of the scratch track corresponding to the stick-slip phenomenon was observed...
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Article
Impression Creep of a Sn−Pb Eutectic Alloy
Impression creep tests on a Sn-Pb eutectic alloy showed a hyperbolic sine stress dependence of impressing velocity and an activation energy of 55 kJ/mole which is independent of the punching stress. A finite e...
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Article
Impression creep of lead
The impression creep behavior of lead was investigated using a 100 μm diameter punch at ambient and elevated temperatures (433 K-563 K) under punching stresses of 6–70 MPa. The results were compared with the d...
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Article
Magnetic domains along shear bands in amorphous metals observed by spin-polarized scanning electron microscopy
A novel spin-polarized scanning electron microscope with capabilities of observing microscopic domain structures and determining in-plane magnetization directions has been used to investigate the stress-induce...
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Article
Interfacial Effect in Water-Infiltrated Nanoporous Media
Water infiltrated nanoporous glasses have a dam** peak at about 1 Hz (4.6 nm pore size) and 6 Hz (8.8 nm pore size) at room temperature; their relaxation strengths are consistent with the dam** mechanism in w...
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Article
Thermal conductivity and interface thermal resistance of Si film on Si substrate determined by photothermal displacement interferometry
An in situ, noncontact, photothermal displacement interferometer for performing thermal diffusivity measurements on bulk and thin-film materials has been developed. Localized transient surface motion is generated...
