Skip to content

All published articles 1996

“Rey Resin Dispense Pattern” A Solution to Package Voids Defect on Thinner Package Thickness in Compression Mold

Lester Joseph T. Belalo & Rey Nino C. Arnido · Journal of Engineering Research and Reports · 2021

This paper will discuss how package voids Mold defect was addressed on thinner Compression mold packages like BGA (Ball Grid Array) and Sensor Devices. Significant action was the application of “Rey Resin Dispense” pattern in compression mold granule compound dispensing was a key...

Open access Research Article 10.9734/jerr/2021/v20i217264

Mathematical Analysis of Uncertainty in Bangladesh Agricultural Sector

Mohammad Khairul Islam, Md. Mahmud Alam & Mohammed Forhad Uddin · Journal of Engineering Research and Reports · 2021

This study presents three different mathematical models for profit optimization of agricultural products in Bangladesh. The prime focus of the paper has been to develop a Mixed Integer Linear Programming (MILP) model and analyze this model for two situation of demand uncertainty....

Open access Research Article 10.9734/jerr/2021/v20i217262

Reliability Evaluation of Rooftop Solar Photovoltaics Using Coherent Threshold Systems

Rudi Uswarman & Ali Muhammad Rushdi · Journal of Engineering Research and Reports · 2021

The trend for use of rooftop solar photovoltaics (PV) is rising due to their promising economic potential as a source of clean renewable energy. In general, a source of renewable solar energy consists of solar PV, an automatic charge controller, a battery pack, and an inverter. T...

Open access Research Article 10.9734/jerr/2021/v20i217263

A Case Study of Asset Integrity and Process Safety Management of Major Oil and Gas Companies in Malaysia

Kuok Ho Daniel Tang · Journal of Engineering Research and Reports · 2021

Asset integrity is closely intertwined with process safety where the latter is often perceived to be equivalent or a subset of the former. In Malaysia, the requirements for offshore process safety are set by Petronas assuming exclusive rights to petroleum in the nation. It impose...

Open access Research Article 10.9734/jerr/2021/v20i217260

Chicken Feather Ash (CFA) as a Partial Replacement of Cement in Concrete

Victor Emeka Amah, Ejikeme Ugwoha & Jahswill Macaulay · Journal of Engineering Research and Reports · 2021

Every day, large quantities of chicken feathers are disposed of as waste at markets where birds are slaughtered and sold for meat. The possibility of using Chicken feather ash (CFA) as a partial replacement of cement in the concrete making was investigated. Water-cement ratio and...

Open access Research Article 10.9734/jerr/2021/v20i117256

Upgrading Die Attach Epoxy Dispensing Mechanism

Michael D. Capili · Journal of Engineering Research and Reports · 2021

This research paper addressed how to improve the Die Attach Pneumatic Time-Pressure Dispensing Valve. Different assessment and statistical validation comparing the efficiency of the Pneumatic Time-Pressure Dispensing Valve and Dispensing Volume Reduction. The Musashi Super Ʃ CMII...

Open access Research Article 10.9734/jerr/2021/v20i117257

Ball Crack Mitigation through Wirebond Process Optimization

Anthony R. Moreno, Frederick Ray I. Gomez & Rennier S. Rodriguez · Journal of Engineering Research and Reports · 2021

Intermetallic is a critical factor that is controlled and limit during manufacturing of integrated units. Through improving the ball flatness response of the semiconductor wire significantly impact the outcome for the intermetallic characteristic between metal such as Gold-Alumin...

Open access Research Article 10.9734/jerr/2021/v20i217259

Group Integration Method in Integral Calculus at the College of Engineering University of Eastern Philippines

Eladio B. Jao Jr. & Benjamin D. Varela · Journal of Engineering Research and Reports · 2021

This study intended to determine the effect of Group Integration Method on academic performance in Integral Calculus at the College of Engineering University of Eastern Philippines. It employed a quasi-experimental design that involved two sections of second year BSEE students en...

Open access Research Article 10.9734/jerr/2021/v20i117252

Bond Pad Probe Marks Effect on Intermetallic Coverage

Anthony Moreno, Rennier Rodriguez & Frederick Ray Gomez · Journal of Engineering Research and Reports · 2021

The paper presents a study on the effect of semiconductor die’s bond pad probe marks on the interface between the wire and the bond pad. The probe marks are quantified in terms of percentage area in the bond pad, while the interface strength between the wire of Gold material to t...

Open access Research Article 10.9734/jerr/2021/v20i117253

Optimizing the Tensile Strength of Polystyrene Lightweight Concrete: A Panacea for Sustainable Housing Development in Developing Countries

S. E. Ubi · Journal of Engineering Research and Reports · 2021

The use of polystyrene beads in concrete applications has been limited due to its perceived low strength properties. Tensile strength test is an important test that determines the vulnerability of concrete to tensile cracking due to the weight of the structural load. Water, sand,...

Open access Research Article 10.9734/jerr/2021/v20i117254

Comparative Analysis and Regenerative Studies of Alkaline Modified Groundnut Shell as Adsorbent for the Removal of Oil Layer from Polluted Water

Okoro Sylvanus Ezenwa & Nwabueze Henrietta Ogochukwu · Journal of Engineering Research and Reports · 2021

This work focuses on the comparative analysis and regenerative studies of alkaline modified groundnut shell as adsorbent for the removal of oil layer from water surface. The groundnut shell was carbonized at 800°C before chemical activation. Scanning Electron Microscope (SEM) and...

Open access Research Article 10.9734/jerr/2021/v20i117251

Improvement of Fiber Fines Retention and Mechanical Properties of Board Paper Using Corn and Tapioca Starch- A Handsheet Study

Klaus Doelle, Jonas Sonntag, Kai Fischer & Tyler Dominesey · Journal of Engineering Research and Reports · 2021

Steadily increasing production cost in the paper industry require more efficient resource allocation and utilization of recycled materials and the use of renewable materials and additives to become more environmentally friendly. With this project, 100 g/m² TAPPI handsheets from i...

Open access Research Article 10.9734/jerr/2021/v20i117245