TL glow curve and stress-strain behavior of polypropylene monofilament irradiated by UV-ray.

Tl Glow Curve and Effect of Annealing Analysis on Natural Barite Collected from Mangampeta, India

The thermostimulated luminescence (TSL) glow curve characteristics of ten barite crystals of Mangampeta mines (Cuddapah District of Andhra Pradesh, India) were analysed. The natural thermoluminescence (NTL) measurements were carried out for all the samples and show three peaks at 80oC, 120oC and 295C, when recorded with linear heating rate of 10°C/sec. The sample irradiated with a gamma dose o...

Characteristic Points of Stress-Strain Curve at High Temperature

Determination of critical points on hot stress-strain curve of metals is crucial in thermo-mechanical processes design. In this investigation a mathematical modeling is given to illustrate the behavior of metal during hot deformation processes such as hot rolling. The critical strain for the onset of dynamic recrystallization has been obtained as a function of strain at the maximum stress. In a...

A New Technique based on Strain Energy for Correction of Stress-strain Curve

Tensile stress-strain curve is of high importance in mechanics of materials particularly in numerical simulations of material deformations. The curve is usually obtained by experiment but is limited by necking phenomenon. Engineering stress-strain curve is converted to true stress-strain curve through simple formulas. The conversion, however, is correct up the point of necking. From this point ...

Creep and Stress Relaxation Behavior of Polypropylene, Metallocene-Prepared Polyethylene and their Blends

Luminescence Properties Of Pure CaSO4 Nanoparticles Produced By Co- Precipitation Method

Thermoluminecsence (TL) characteristics of pure CaSO4 nanoparticles produced by co-precipitation method are presented. The formation of the nanoparticles was confirmed by X-ray diffraction (XRD) and scanning electron microscope (SEM). TL glow curve of this phosphor, exposed to gamma radiation exhibits five overlapping glow peaks in the complex glow curve at 463, 470, 483, 498 and521(K) respecti...