Ashish Thakur

Mekelle University | MU · Mechanical Engineering Solid Mechanics and Design

The objective of this paper was to apply reverse engineering modification on the three-wheel vehicle chassis commercially sold in the name of Bajaj auto. Six month timeframe was expensed to complete the design and manufacturing of the chassis. The design process had been segmented into three phases of goals to accomplish; collection of appropriate...

This research work focused on melt flow rate investigation of recycled high density polyethylene (HDPE) and virgin high density polyethylene. Melt flow rate of the developed material were tested to determine the quality of the plastics. From the experimental test results, some of the samples (scrap concentration up to 60 wt. % and virgin concentrat...

This research work focused on investigating mechanical properties of recycled high density polyethylene (HDPE) andvirgin high density polyethylene. To accomplish this research work, 3.1 kg scraps and 2.1 kg virgin HDPE are used for test sample preparation. Experimental works using tensile, impact, and flexural tests were conducted to investigate th...

This article is about the Design, Development and Characterization of Wood Plastic Composites for engineering applications.

The study presents quantitative analysis of particle and grain size distributions in Al-Zn-Mg (7020) alloy subjected to a various heat treatments. Microstructural analysis was done by the APHELION OLYSIA software. Some significant quantitative changes in the size and distribution of particles as a function of the heat treatment temperature were obs...

This paper presents a methodology to compare three welding processes, namely SAW (submerged arc welding), SMAW (shield metal arc welding) and GMAW (gas metal arc welding) and to select the best one for a given application. Study is the selection of arc welding process for improving quality and welding cost case in MIE and proposes a method for dete...

Fatigue tests of smooth specimens and CT specimens of a hot rolled AA7020 Aluminum alloy have been performed in laboratory at ambient temperature. Fatigue strength and fatigue crack propagation (FCP) characteristic were evaluated and fracture mechanism was discussed on the basis of crack initiation, small crack growth, and fracture surface analysis...

This paper analyzes stress corrosion cracking (SCC) of pre-cracked samples in the presence of compressive residual stresses generated in the vicinity of the crack tip during fatigue pre-cracking. Research focuses on the role of crack-tip residual stresses of compressive nature, generated by fatigue loading, in stress corrosion cracking of pre-crack...

The emergence of non-toxic, ecofriendly and biocompatible polymers derived from natural sources have added a new and exciting dimension to the development of low-cost and scalable biomaterials for tissue engineering applications. Here, we have developed a mechanically strong and durable hydrogel comprised of an ecofriendly biopolymer that exists wi...

This paper presents effect of heat treatment (annealed, quench hardened, and tempered) on mechanical properties and microstructureof the rear trailing arm case study at Mesfin Industrial Engineering PLC, Ethiopia. The samples were heat treated in muffle furnace in Mekelle University, Heat Treatment Lab at different temperature levels and holding ti...

This paper presents failure analysis and modeling of the rear trailing arm case study at Mesfin Industrial Engineering, Ethiopia. Considering loading type as 1G, 2G and 3G bump load condition, the static and fatigue analysis were carried out using SOLIDWORKS simulation finite element analysis. The maximum von Mises stress and static factor of safet...

The usage of prosthetics such as retina, brain‐machine and neural implants along with the projected importance of technical health aids indicates that we are entering a cybernetic era. In article number 1700931, Alireza Dolatshahi‐Pirouz and co‐workers discuss the advances in this field with a special focus on how flexible electronics are being use...

At the crossroads of chemistry, electronics, mechanical engineering, polymer science, biology, tissue engineering, computer science, and materials science, electrical devices are currently being engineered that blend directly within organs and tissues. These sophisticated devices are mediators, recorders, and stimulators of electricity with the cap...

In particular the paper leads to minimize the assembly time and reduction of product cost that is maximized because of wastage due to crack. The objective of this research was to maximize assembly productivity for AK103 at Gafat Armament Industry. The assembly system was analyzed using layout to represent assembly line and table to represent sub-as...

The main purpose of this research was to investigate crack propagation resistance of shaft. Hollow transmission composite shafts were produced and their crack behavior was investigated. Glass fiber-reinforced polyester polymer composite material is used for the hollow transmission shaft of Hidasie H260 helicopter model of Dejen Aviation Engineering...

This paper dealt on the effect of change of contact ratio on the contact fatigue stresses generated on meshing involute spur gear teeth during operation. In this study, different cases of six contact ratio gearing between and have been analyzed. For each contact ratio the rate of load sharing and angular and radial position of load were determined...

This paper summarizes the development of sliding gate in tigray region, mekelle, Ethiopia. Research work deals design and develop of new gate mechanism for diversion dams that alleviate the operational and structural failure problems. Systematic product development was followed to manage the different phases, from collecting and compiling informati...

Abstract This paper dealt on the effect of change of contact ratio on the contact fatigue stresses generated on meshing involute spur gear teeth during operation. In this study, different cases of six contact ratio gearing between and have been analyzed. For each contact ratio the rate of load sharing and angular and radial position of load were de...

The main purpose of this research is to investigate crack propagation resistance of shaft. Hollow transmission composite shafts were produced and their crack behavior was investigated. Glass fiber-reinforced polyester polymer composite material is used for the hollow transmission shaft of Hidasie H260 helicopter model of Dejen Aviation Engineering...

Abstract This paper summarizes the development of sliding gate in tigray region, mekelle, Ethiopia. Research work deals design and develop of new gate mechanism for diversion dams that alleviate the operational and structural failure problems. Systematic product development was followed to manage the different phases, from collecting and compiling...

The demand for organ transplantation and repair, coupled with a shortage of available donors, poses an urgent clinical need for the development of innovative treatment strategies for long-term repair and regeneration of injured or diseased tissues and organs. Bioengineering organs, by growing patient-derived cells in biomaterial scaffolds in the pr...

Interfacial adhesion of UV curable polymers is important in Micro stereo lithography (MSL) due to the sticking problems during separation from their substrate and insuring adhesion between two dissimilar materials used in micro-fabrication. Therefore, standardizing quantitative ranking among different substrates helps to select the required substra...

The purpose of this paper is to determine mechanical properties on effect of curing time of natural cactus adhesive and compare with other adhesives. Tensile test on bulk cactus specimen stayed at room temperature and humidity for 5 days, 7 days and 11 days respectively were performed to determine the effect of curing time using Universal Testing M...

Interfacial adhesion of UV curable polymers is important in Micro stereo lithography (MSL) due to the sticking problems during separation from their substrate and insuring adhesion between two dissimilar materials used in micro-fabrication. Therefore, standardizing quantitative ranking among different substrates helps to select the required substra...

Given their highly porous nature and excellent water retention, hydrogel-based biomaterials can mimic critical properties of the native cellular environment. However, their potential to emulate the electromechanical milieu of native tissues or conform well with the curved topology of human organs needs to be further explored to address a broad rang...

The concept of lean manufacturing was developed for maximizing the resource utilization through minimization of waste, later on lean was formulated in response to the fluctuating and competitive business environment. Lean manufacturing or also known as lean production has been one of the most popular paradigms in waste elimination in the manufactur...

Statement of significance: A major challenge in engineering interfaces is to control the physical characteristics of an artificial environment in terms of structure and mechanical differences: hard and soft regions. In this review, we will focus on nanoengineered strategies used to emulate the structural and functional aspects of interface tissues...

Injectable hydrogels are investigated for cell encapsulation and delivery as they can shield cells from high shear forces. One of the approaches to obtain injectable hydrogels is to reinforce polymeric networks with high aspect ratio nanoparticles such as two-dimensional (2D) nanomaterials. 2D nanomaterials are emerging class of ultrathin materials...

This study deals about the development of linear programming model for Almeda Private Limited, Ethiopian Textile Industry as a case study. Loose of profit of a company, that is expected to gain, is the result of poor profit planning way or limitation of modern profit planning tools which subjects the company to promote more expenses rather than rev...

Biomaterials-based three dimensional scaffolds with tunable elasticity hold promise in replacing failed organs resulting from injuries, aging, and diseases by providing a suitable cellular microenvironment to facilitate regeneration of damaged tissues. However, controlled presentation of biological signals with tunable tissue mechanics and architec...

This article has been retracted at the request of the Editors-in-Chief. Please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). Reason: The authors have plagiarized part of a paper that had already appeared in Effect of natural aging on the resistivity evolution during artificial aging of the aluminum all...

This article has been retracted at the request of the Editors and Authors. Please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). Reason: This article plagiarises the following articles: C.A. Rodopoulos, J.-H. Choi, E.R. de los Rios, J.R. Yates. Stress ratio and the fatigue damage map 739— Part I: Modell...

The hydrogen embrittlement (HE) of Al–4.35Zn–1.4Mg–0.059Zr alloys in different artificial aging tempers and after retrogression and reaging (RRA) treatments has been investigated by tensile testing hydrogen precharged specimens. The influence of RRA and hydrogen charging on the dislocation structure was studied by TEM. The under-aged temper was the...