Nadiah Ahmad

Technical University of Malaysia Malacca | utem · Faculty of Manufacturing Engineering

Multiple literatures show evidences of how office workstation set-ups can influence muscle activities. However, the relationship between the postural adoption due to workstation setup and its effect to muscle oxygen saturation among office workers is unclear. The aim of this study was to investigate trends of muscle oxygen saturation and perceived...

Lean and ergonomics are two disciplines that shared common goals to improve manufacturing production systems. However, there are limited studies that specifically link ergonomics with Lean’s 3 M concept of Muda (waste), Muri (overburden), and Mura (inconsistency). The study employed semi-structured interview with 10 experienced practitioners on pas...

Liquefied petroleum gas (LPG) storage facilities storing more than 50 tonnes of LPG are classified as major hazard installations (MHIs). This industry involves highly flammable hydrocarbon chemicals that can cause destruction of property and endanger human lives. This study aims to investigate the level of disaster preparedness among 23 LPG storag...

Human Factors Engineering (HFE) study is an established process used by ergonomists and HFE practitioners to analyze human-system interactions during engineering design stages of new and remodeled work facilities. Human accessibility and clearance evaluation is one of the basic components in the task analysis process conducted during HFE study. Thi...

In lateral material handling tasks, which is very common in industries, warehouse systems, and other sectors, the workers can lead to work-related musculoskeletal disorders (WMSDs) because of the task and work designs, especially in upper extremities. WMSDs in hand, wrist, and fingers cause workers to have health problems, in pain and uncomfortable...

Manual material handling (MMH) activities utilize human’s effort with minimal aid from mechanical devices. MMH is typically associated with poor lower back posture which can lead to lower back injury. The likelihood to develop musculoskeletal disorders (MSDs) increases when poor working posture exist in combination with repetition and/or forceful e...

Purpose: There are limited models available to predict work-relatedness of musculoskeletal disorders (MSDs) among semiconductor back-end workers. The study attempts to address the gap through development of a predictive model for this specific population. Method: Potential MSDs risk factors were extracted from 277 ergonomics investigation reports f...

Manual material transfer tasks are common in occupational settings. Repetitive lifting tasks usually involve twisting and bending which are associated with occupational lower back injuries. One of the approaches to reduce bending and twisting is to separate the distance between lifting origin and destination, which will encourage lifters to step an...

Poor wrist postures due to work requirements is one of the established risk factors contributing to the development of work-related musculoskeletal disorders. This study systematically investigates the underlying hypothesis that identification and monitoring of poor wrist postures at work should be in the function of normalized wrist range-of-motio...

Identification and quantification of poor wrist postures at the occupational setting are generally challenging due to rapid changes in wrist movement. A system prototype was developed to capture and assess wrist postural behaviour at the workplace. This manuscript describes the development and initial validation process of the system prototype. The...

Background: There have been some concerns related to manual handling of large items in industry. Manual handling operations of large sheet metal may expose workers to risks related to efficiency as well as occupational safety and health. Large sheet metals are difficult to move and burdensome to lift/transfer, and handling the sharp sheet edges ma...

The needs of research on human posture and its joint-motion relationships are important. Providing a real-time postural measurement tool has attracted the attention of many human postural-related researchers. This study has developed and performed a validation analysis on a new innovative system for sampling and finding the angles of motions of eac...

A good work posture is one of vital contributors to occupational health and to increase the efficiency of industrial workers. Recently, numerous research works have developed an Integrated RULA- KinectTM system for work posture assessment; however, usability of the developed system remains unknown. The objective of this study was to develop a proto...

Automated smart system has been an emerging trend in Industry 4.0. A RULA-Kinect system has been developed to automate the traditional Rapid Upper Limb Assessment (RULA). Avalidation study was conducted to compare RULA assessment between the system and human assessors. T-Test results showed that the RULAscores of 9 tasks are comparable (no statisti...

This study applied heat transfer and fluid flow in numerical simulation of metal casting solidification in order to investigate the solidification behaviour of the metal casting as it reaches dendrite coherency point. The goal is to explore and gain insight about the ability of a given feeder design to feed the casting section to obtain a shrinkage...

Conventional milling machine has been recognized as one of the solutions for high productivity and economical machining processes. However, the existing design of conventional milling workstation leads to non-neutral work postures because of the machine operator has to bend downward his torso for better visualization in setting and machining the wo...

The aim of this study was to propose a conceptual design of SMAW workstation which considered work postures of welders and weld bead dimensions. This study applied full factorial design of experiment. The independent variables were table height, table surface inclination, and work position whereas the dependent variables were bead height, bead widt...