We present a Chandra X-ray observation of the X-ray bright E2 elliptical galaxy NGC 4649. In addition to bright diffuse emission, we resolve 165 discrete sources, most of which are presumably low-mass X-ray binaries (LMXBs). As found in previous studies, the luminosity function of the resolved sources is well-fit by a broken power-law. In NGC 4697 and NGC 1553, the break luminosity was comparab...

In this paper, the diagnosis of broken rotor bar (BRB) is investigated analytically and experimentally based on induction motors (IM) with variable speed drives (VSD). The analysis of the VSD process has understood that the sensorless control mode adjusts both supply voltage and current in order to maintain the operating speed within high accuracy. It means that any asymmetric problems with the...

Excavation of tunnel in rock mass refers to complex continuum-discontinuous processes. For capturing the damages side walls and supports bolts/cables, different types elements shall be used same framework. In this work, a novel method is proposed which couples block, particle, bar for simulating intact mass, broken supporting system respectively during excavation. Brittle Mohr-Coulomb fracture ...

One of the problems that related to quality and often occurs in sewing process at CV Batara Apparel is there are frequent thread break problems. Termination occur caused by an error during installation does not pass through needle bar hole directly passed needle. This results defects stitches such as broken stitches. In order solve problem hole, it can be overcome implementing SOP (Standard Ope...

This paper presents the modeling and broken rotor bar fault diagnostics by time–frequency analysis of motor current under an extended startup transient time. The current-based nonstationary signal is retrieved investigated for its response to segregate faults spatial harmonics. For studying effect reduced voltage on various parameters theoretical definition patterns, winding function (WFA)-base...