New devices and technologies in the semiconductor industry are getting more challenging to process because of inherent issues especially on quad-flat no-leads (QFN) packaging assembly. This paper is focused on the improvement done for QFN leadframe device to address the major mac...
Open access
Research Article10.9734/jerr/2021/v20i517306
This paper will discuss how to reduce (IDM) Indirect Material consumption for derailing process by eliminating the manual derailing method as part of cost saving project. It involves the removal of cutter blade used for derail.Cost improvement was one of organizational goals of t...
Open access
Research Article10.9734/jerr/2021/v20i517305
Innovations and breakthroughs are continuously driven in semiconductor manufacturing to overcome existing assembly limitations and recurring difficulties. This paper is focused on the resolution of the delamination issue during die attach assembly process. A new design of semicon...
Open access
Research Article10.9734/jerr/2021/v20i417303
In the world of semiconductor industry, automation plays a big role on every manufacturing plants to improve efficiency, prevent product yield losses, and making sure that top quality products will be delivered on end user. On die attach curing process of manufacturing semiconduc...
Open access
Research Article10.9734/jerr/2021/v20i417304
Pondi Pius Eddy, Nwigbo Solomon Chuka, Obende Eziekel Omeiza, Olisakwe Henry Chukwuemeka, Chikelu Okechukwu Peter & Azaka Onyemazuwa Andrew·Journal of Engineering Research and Reports·2021
The durability of a machine structure is based on its mechanical performance through its entire service life. To avoid structural failures in machines, it is a standard design practice that machines be analyzed based on the types of loading (static and fatigue) associated with it...
Open access
Research Article10.9734/jerr/2021/v20i417301
Marvin T. Valentin, Alex Smeets, Daniel E. Ciolkosz, Algirdas Jasinskas, Milagros B. Onalan, Alvin C. Dulay, Leonardo D. Dumalhin, Constantino T. Sudaypan Sr., Stanley F. Anongos Jr., Cheryll C. Launio, Marlon N. Galad, Roger Lee M. Suclad & Keithler M. Pagnas·Journal of Engineering Research and Reports·2021
A concept design of a carrot seeder, filed for patent application, was successfully developed in this study. Farmers were visited and interviewed and the data regarding their existing practices in planting carrots, corresponding tools and equipment and planting requirements such...
Open access
Research Article10.9734/jerr/2021/v20i417302
The non-powered separator is one of the key equipment in the dry sand production line, which is responsible for the separation of coarse and fine materials. In this paper, based on the turbulence Standard Model, the air sand powder three-phase fluid model is simplified to gas-so...
Open access
Research Article10.9734/jerr/2021/v20i417299
This study narrates the quality of concrete production as slump wet in warm and hot zones. The quality of concrete mixture is of inevitable concern to all stakeholders in the construction industry in the zones when the climatic conditions of the zones are considered. Absence of N...
Open access
Research Article10.9734/jerr/2021/v20i417300
Surface-groundwater interaction is a research area of significant importance for its central role in wastewater treatment, irrigation, drainage, flood control, erosion and sediment control. Mathematical models are often used for the estimation of surface-groundwater interactions...
Open access
Research Article10.9734/jerr/2021/v20i417298
Thermal energy storage (TES) can be utilized as supplemental platforms for improving operational reliability and systemic efficiency in variety of industries, such as for reducing water usage in power production (food-energy-water/ FEW nexus), chemical and agro-process industries...
Open access
Research Article10.9734/jerr/2021/v20i417296
During new product development of a substrate land grid array (LGA) device, issues were encountered at wirebonding process due to design constraints. This paper is focused on addressing the wire-to-wire short defect during wirebonding process of the first bond. Wirebond process o...
Open access
Research Article10.9734/jerr/2021/v20i417297
Distillation process is a complex process of conduction, mass transfer and heat conduction, which is mainly manifested as follows: The mechanism is complex and changeable with uncertainty; the process is multivariate and strong coupling; the system is nonlinear, hysteresis and ti...
Open access
Research Article10.9734/jerr/2021/v20i417294
Solder joint reliability is very important to ensure that an integrated circuit (IC) semiconductor package is functional within its intended life span as the solder joint establishes electrical connection between the IC and the printed circuit board (PCB). Solder fatigue failure...
Open access
Research Article10.9734/jerr/2021/v20i417295
The cooling rate of molten cast iron can make or mar it. The cooling rate plays a significant role in the resulting mechanical properties of cast iron. It determines the grain growth and size. The mechanical properties of cast iron variation along its length are achieved either w...
Open access
Research Article10.9734/jerr/2021/v20i417292
The aim of this work was to synthesize polyaluminum ferric chloride coagulant with significant coagulation performance employing K-feldspar/NaOH leaching residue as precursor. Potassium extraction from K-feldspar through sodium hydroxide calcination method is carried out at optim...
Open access
Research Article10.9734/jerr/2021/v20i417293