The objective of the current study is to determine the fatigue limit of a clean and high-performance material named as HSLA-100 steel and to compare the obtained fatigue limit with that of theoretically predicted fatigue limit by statistics of extreme value (SEV) method. Also, the size of inclusions located at the site of fatigue crack nucleation on the fracture surface of the fatigue test spec...

ZERO SPEED OR MOTION DETECTION Motion detection is a valuable resource for improving productivity in many plants. As production speeds increase and more sophisticated assembly lines and conveyor systems are used, there is a greater need to monitor and control conveyor speed. This is particularly true since there are more motors, transmissions and belts that can fail, causing the system to halt....

Where increasing returns to adoption play a role in the diffusion of a new technology, technological "lock-in" is now often claimed to occur. However, this result, and the modeling approach that produces it, are problematic. Further innovations could never have a chance of disseminating, if "lock-in" had occurred in the diffusion process of earlier innovations. Yet, in reality, industrial chang...

Fatigue crack growth (FCG) research conducted in the near threshold regime has identified a room temperature creep crack growth damage mechanism for a fine grain powder metallurgy (PM) aluminum alloy (8009). At very low ∆K, an abrupt acceleration in room temperature FCG rate occurs at high stress ratio (R = Kmin/Kmax). The near threshold accelerated FCG rates are exacerbated by increased levels...

Improved communications and the Internet make it possible for many people to work just as effectively from a cottage in a village as in a city office, for example, while cheaper transport and increased leisure time make it easier for farms to expand into non-farming activities. As a result, governments have moved away from a defensive attitude to rural policy, essentially focussed on trying to ...

Hardly any economist or economic historian now disputes that technical progress and advances in scientific knowledge underpin all long-term, sustained economic growth. Sure, in the short run, sharp spurts of improvement in economic performance can arise from investing in factories, streamlining transportation and distribution networks, bettering market structure, and removing impediments to pro...

An accelerated degradation test (ADT) is regarded as an effective alternative to an accelerated life test in the sense that an ADT can provide more accurate information on product reliability, even when few or no failures may be expected before the end of a practical test period. In this paper, statistical methods for optimal designing ADT plans are developed assuming that the degradation chara...