Abstract The chopped carbon fiber (CF) was introduced into Al (aluminum) /PTFE (polytetrafluoroethylene) reactive materials, and Al/CF/PTFE materials with different mass fractions of CF were prepared. In order to study the effect on mechanical properties ignition characteristics Al/PTFE quasi-static compression tests carried out types specimens. fracture specimens observed by SEM, mechanism ana...

In this paper, four different nondestructive testing (NDT) methods and static bending tests were done on poplar (Populus ussuriensis Kom.) and birch (Betula platyphylla Suk.) Laminated Veneer Lumber (LVL). The effects of compression ratio on the modulus of elasticity (MOE) and modulus of rupture (MOR) of LVL with vertical load and parallel load were investigated. There were four compression rat...

Molecular dynamics simulation techniques and an analytic many-body potential function have been used to study a spherical C,,, cluster (“Buckminsterfullerene”) compressed between graphite planes. We find that the cluster can reversibly deform under anisotropic compression to a radius (in the direction of compression) that is l/3 that of the uncompressed cluster. On compression the restoring pre...

The physiological effects of static compression of the leg have recently been reinvestigated. Graded compression extending from the ankle to the upper thigh produces the maximum increase in velocity of femoral vein blood flow and the maximum decrease in clearance times of contrast media and radioisotopes from the deep veins of the calf. This type of compression may be easily produced by a speci...

We describe lossless methods for compression of 3D PET data. Static list-mode data is re-sorted into sinograms and compressed using a combination of run-length and entropic coding. Dynamic list-mode data is compressed using a sinogram/timogram format in which the arrival times of each photon pair are stored in spatial order, indexed by the sinogram. Compression of the timogram is performed usin...

The effect of squeeze casting process parameters on wear behavior of AC2A aluminium alloy was primarily investigated in this experimental study. Five process parameters, namely squeeze pressure, pouring temperature, die temperature, die material and compression time, each at four levels were chosen and sixteen experimental runs based on L16 orthogonal array were performed. From analysis of vari...

Buckling of imperfect thin shell tank which is subjected to uniform axial compression is analyzed. The effect of internal pressure on the stability of a shell tank filled with a homogeneous-heterogeneous liquid was considered. Investigation of the liquid nature effect on reduction of the shell buckling load is performed by using the finite elements method. Calculating results in terms of analyt...

The paper presents a method of abstraction for timed systems. To extract an abstract model of a timed system we propose to use static analysis, namely a technique called path compression. The idea behind the path compression consists in identifying a path (or a set of paths) on which a process executes a sequence of transitions that do not influence a reachability property being verified, and r...