Abstract Severe plastic deformation (SPD) processes offer the possibility of improving mechanical properties metallic materials by grain refinement. However, this great potential has so far mostly been applied on a laboratory scale or small series. Equal-Channel Angular Pressing (ECAP) also enables to integrate advantages in industrial with large output—so far, mainly for bars thick plates. In ...

AA6060 aluminum alloy was subjected to severe plastic deformation through equal-channel angular pressing (ECAP) up 8 passes via route BC. ECAPed samples isochronally annealed for 1 hour at a temperature range of 150-450 °C. The microstructure and texture the studied material were evaluated by electron backscatter diffraction, microhardness characterized Vickers testing. It found that shearing i...

The effects of atracurium and alcuronium on the evoked mechanical and electromyographic responses of the adductor pollicis were investigated in 30 adult patients. The ulnar nerve was stimulated with trains of four supramaximal pulses of 0.2 ms duration and a frequency of 2 Hz at intervals of 20 s. The mechanical response was measured using a strain gauge force transducer and the evoked compound...

UNLABELLED The electrical stimulation generated by the Cochlear Implant (CI) may improve the neural synchrony and hence contribute to the development of auditory skills in patients with Auditory Neuropathy/Auditory Dyssynchrony (AN/AD). AIM Prospective cohort cross-sectional study to evaluate the auditory performance and the characteristics of the electrically evoked compound action potential...

BACKGROUND The Auditory Nerve Recovery Function (REC) may be extracted from the Electrically Evoked Compound Action Potential (ECAP). ECAP may be influenced by the stimulation received (or the deprivation of stimulation) and by the etiology of the hearing loss, consequently it might affect the REC. AIM To verify whether there is a correlation between the REC and each of the following factors:...

OBJECTIVES The study objectives were to compare the rate of neural recovery and speech perception performance in children with auditory neuropathy spectrum disorder (ANSD) and children with sensorineural hearing loss (SNHL) from other etiologies. STUDY DESIGN Cohort study. SETTING Academic hospital and cochlear implant center. SUBJECTS AND METHODS Ten children with ANSD were matched based...

Abstract The main aim of the current work is to investigate effect equal channel angular pressing (ECAP) processing parameters, namely, number passes, ECAP die angle, route type, and temperature on mechanical electrical properties pure copper (Cu). finite element method was used simulate homogeneity stress plastic strain distribution during processing. response surface methodology (RSM) identif...

Micro-forming with ultrafine-grained (UFG) materials is a promising direction for the fabrication of micro-electro-mechanical systems (MEMS) components due to the improved formability, good surface quality, and excellent mechanical properties it provides. In this paper, micro-compression tests were performed using UFG pure aluminum processed by equal-channel angular pressing (ECAP) with subsequ...