The relaxation of polymers around and below their glass transition temperature is governed by a range correlated unit processes with wide timescales. fast deformation rates shock loading can negate significant fraction these resulting in the dynamical rubbers. In this letter we report inverse, transient melting glassy polymer under loading. large deviatoric stresses near front induce transition...

Heat stress can impact crop development and yield amino acids play diverse essential roles in plants. This work aimed to study the long-term effects of foliar spray with L-arginine antioxidant machinery, physiology, nutrition, productivity fruit quality tomato plants subjected transient heat stresses. Six concentrations were sprayed on plants: 0 (control), 0.10, 0.25, 0.50, 1.0 2.0 g·L–1. The c...

Using thermoplastics as the matrix in carbon fiber-reinforced polymers (CFRP) offers possibility to make use of welded joints, which results weight savings compared conventional joining methods using mechanical fasteners. In this paper, resulting temperature distribution material due resistance welding is investigated by transient finite element (FE) simulations. To examine effects on component...

A review of the existing state of the art for handling human performance under transient heat stress has been made. It was concluded that it would be necessary to develop a new methodology based on "micro-performance measurements to assess severe localized transient heat stresses as relevant to contemporary flight problems. The test procedure proposed is based on the rationale that a primary ta...

This paper first examines the problems of using impact methods to achieve fast fracture of polymers. On-specimen gauges are employed to obtain the distribution of transient and other stresses in different parts of the specimen. A new method is then introduced that avoids transient forces and achieves crack velocities in small specimens of tough polymers of over 300 m s-l. It provides for the me...