Financial Orientated Heuristic Evaluation for Hand Tools 2021 HFES International Annual Meeting

2021 ◽  
Vol 65 (1) ◽  
pp. 859-863
Author(s):  
Zhonglun Wang ◽  
Richard Stone ◽  
Joseph Kim ◽  
Steffen Baumann
Keyword(s):  
Injury Rate ◽  
Heuristic Evaluation ◽  
Purchasing Decisions ◽  
Tool Selection ◽  
Hand Tools ◽  
Financial Outcomes ◽  
Tool Evaluation ◽  
Hand Tool ◽  
Evaluation Platform ◽  
Review Current

The goal of purchasing hand tools is to improve financial outcomes for buyers. These financialgains can come from multiple aspects of hand tools, such as increased productivity, improved product quality, and decreased injury rate. Based on a literature review, current hand tool purchasingdecisions are frequently made by professionals without specialized scientific backgrounds; however, the hand tool selection methods they receive are solely based on ergonomic evaluations. Heuristic evaluation, created by Nielsen & Molich (1990), has been proven effective in discoveringusability issues quickly. Combined with the knowledge from hand tool evaluation literature andNielsen & Molich’s (1990) heuristic evaluation platform, two versions of financially orientatedhand tool heuristic evaluations were created: a buyer version and a seller version. The buyer versionhelps hand tool buyers make financially orientated purchasing decisions; the designer version helpsquickly assess the financial viability of the hand tool design under review.

Tool selection, ergonomics and economics: a comparison study between traditional and proposed broader ergonomic hand tool evaluation

2022 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Thomas M. Schnieders ◽  
Colten W. Fales ◽  
Ahmad Abdelhafiz Mumani ◽  
Erik Danford Klein ◽  
Joseph Yun Ming Kim ◽  
...  
Keyword(s):  
Comparison Study ◽  
Tool Selection ◽  
Tool Evaluation ◽  
Hand Tool

Evaluation of an Experimental Testing System for Non-Powered Hand Tools

2000 ◽  
Vol 44 (22) ◽  
pp. 643-646 ◽  
Author(s):  
Tanja Niemelä ◽  
Markku Leppänen ◽  
Minna Päivinen ◽  
Markku Mattila
Keyword(s):  
Measurement System ◽  
Experimental Testing ◽  
Opening Angle ◽  
Emg Activity ◽  
Testing System ◽  
Strain Gages ◽  
Flexor Muscle ◽  
Hand Tools ◽  
Hand Tool ◽  
Forearm Flexor

During the Eurohandtool Project an experimental testing system for non-powered hand tools was developed for laboratory testing. With this system, it is possible to measure simultaneously (1) the EMG activity of two muscles, (2) the opening angle of hand tool blades by means of a potentiometer and, (3) by means of strain gages, the force transmitted to the handle. The first part of evaluation of the system was to determine its time of warming-up, reliability, linearity and repeatability. This paper concentrates on the second part, during which the aim was to test the measurement system by comparing the forces needed to cut wood of a certain diameter, and the actual force required, as measured by a material-testing system. The correlation between forearm flexor muscle activity and the compression force created by the user was investigated. The evaluation of experimental testing system for non-powered hand tools has shown that there are methods to measure force demand, opening angle and EMG-activity simultaneously. However, it is recommended to make some improvements before this measurement system can be taken into widespread use.

scholarly journals Vibration of Power Hand Tool and Discomfort Experience among Malaysian Industrial Workers

2013 ◽  
Vol 10 ◽  
pp. 313-317 ◽  
Author(s):  
Rahayu K. Seri ◽  
A. Nurulhuda ◽  
A. Rohana
Keyword(s):  
Industrial Workers ◽  
Hand Tools ◽  
Industrial Worker ◽  
Limit Value ◽  
Exposure Limit ◽  
Time Period ◽  
Hand Tool ◽  
Before And After ◽  
Long Time ◽  
Power Hand Tools

In reality, people who worked with power vibrating tools exposed with the vibrated syndrome that effect their normal life especially who involved for long time period. Hand-arm vibration (HAV) is a widespread hazard in many industries and occupations involving the use of handheld power tools or hand-fed machines. This paper describes a research and observation on the vibrating hand tool. The objective of this study is to measure and compare the grip strength and hand arm vibration before and after using the Ready-Reckoned standard for industrial workers. Continually, an analysis is conducted due to the pain and discomfort experience that face by the workers. This research also do the analysis about the effects of the vibration to the workers hand depend on the duration of handling the power hand tool. Hundred respondent was involved which 50 men and 50 women who had been identified as an industrial worker and working with power hand tools or machinery. The respondents were interviewed and answer Q-Survey that directly conducted at their workplace after doing the test. As the result, worker who works 8 hours per day, the exposure limit value (ELV) is 5m/s, it can cause fatal effects. Most of workers suffered with fingers that gone white on cold exposure and weakness in hand grip.

HAND TOOLS OPERATOR 'S HEALTH WORKSHOP ON MECHANICAL AND LEVEL OF RISK WHITE SYNDROME FINGERS

2016 ◽  
Vol 78 (5) ◽  
Author(s):  
Toni Dwi Putra ◽  
Vitri Pitrandjalisari ◽  
Nurida Finahari
Keyword(s):  
Working Conditions ◽  
Laboratory Tests ◽  
Field Data ◽  
Field Trials ◽  
Safety Equipment ◽  
Hand Tools ◽  
White Syndrome ◽  
Shoulder Joints ◽  
Hand Tool ◽  
Negative Effect

Workers in the metal industry are using the equipment (hand tool) that produces vibrations. These vibrations have a negative effect on the fingers, forearm, or shoulder joints. Disorders that often arises is often called the effects of hand arm vibration. These effects vary of workers, ranging from finger whitened condition to the inability to move the finger. Lack of security and safety equipment will further enlarge this negative effect, because the disturbance will result in declining labor productivity. This study aims to model safety equipment in the form of fluidic damper to reduce glove hand arm vibration. This objective will be carried out in stages: 1) obtain field data on working conditions, workload with a hand tool and type of equipment used, 2) determine the parameters of vibration hand tool that is widely used, 3) modeling and making fluidic damper glove, perform the test comparison of the use and without the use of glove, 4) glove on field trials that have been surveyed. In the period of the study for 2 years, each parameter vibration hand tools frequently used can be measured in the laboratory. Tests conducted to determine the vibration of the arms that operate hand tools. Fluidic damper glove designed to dampen vibrations in the arm so that its effect on health problems can be reduced.

Process Quality Assessment Model of Hand Tools: A Case Study on the Handle of Ratchet Torque Wrench

2016 ◽  
Vol 23 (05) ◽  
pp. 1650017 ◽  
Author(s):  
Tsang-Chuan Chang ◽  
Kuen-Suan Chen ◽  
Chun-Min Yu
Keyword(s):  
Process Quality ◽  
Assessment Model ◽  
Quality Level ◽  
Hand Tools ◽  
Hand Tool ◽  
Torque Wrench ◽  
Do It Yourself ◽  
Verification Model ◽  
Present Case Study

The growing popularity of do-it-yourself (DIY) projects has increased the penetration of hand tools devices into the market. This paper thus conducts a case study on ratchet torque wrenches and develops an assessment and verification model of process quality as a means of assisting hand tool manufacturers in managing the quality of ratchet torque wrench products and promoting the on-going development in the hand tool industry. We first propose the process quality index (PQI) that can directly determine a precise level of quality based on the relationship between various process capability indices and Six Sigma quality levels. Using inference, we further develop a testing model of PQI to evaluate the quality level reached of process performance. The present case study is investigated to illustrate the practical applicability of the proposed method. We believe that the proposed model will facilitate the production of high-value products and thereby enhance the competitive advantage of firms in Taiwan.

Comparison of force measurement systems for hand tools

2000 ◽  
Vol 2 (3) ◽  
pp. 191-200
Author(s):  
Tanja Niemel\"a ◽  
Markku Lepp\"anen ◽  
Minna P\"aivinen ◽  
Markku Mattila
Keyword(s):  
Measurement System ◽  
Force Measurement ◽  
Experimental Testing ◽  
Opening Angle ◽  
Emg Activity ◽  
Testing System ◽  
Flexor Muscle ◽  
Hand Tools ◽  
Measurement Systems ◽  
Hand Tool

Ergonomic properties of a pair of pruning shears were tested using a new laboratory measurement system for non-powered hand tools. With this system, it is possible to measure simultaneously the EMG activity of two muscles, the opening angle of hand tool blades by means of a potentiometer and, by means of strain gages, the force transmitted to the handle. A measurement system was tested by comparing the forces needed to cut wood of a certain diameter, and the actual force required, as measured by a material-testing system. The correlation between forearm flexor muscle activity and the compression force created by the user was investigated. The evaluation of the experimental testing system for non-powered hand tools has shown that there are methods for the measurement of force demand and opening angle. However, some improvements are recommended before this measurement system is used widely in the field.

scholarly journals Recovering prehistoric woodworking skills using spatial analysis techniques

2015 ◽  
Vol II-5/W3 ◽  
pp. 153-158
Author(s):  
K. Kovács ◽  
K. Hanke
Keyword(s):  
Spatial Analysis ◽  
Bronze Age ◽  
Morphological Characteristics ◽  
Hand Tools ◽  
Tool Marks ◽  
Intangible Heritage ◽  
Tool Mark ◽  
Hand Tool ◽  
Independent Technique ◽  
The Bronze Age

Recovering of ancient woodworking skills can be achieved by the simultaneous documentation and analysis of the tangible evidences such as the geometry parameters of prehistoric hand tools or the fine morphological characteristics of well preserved wooden archaeological finds. During this study, altogether 10 different hand tool forms and over 60 hand tool impressions were investigated for the better understanding of the Bronze Age woodworking efficiency. Two archaeological experiments were also designed in this methodology and unknown prehistoric adzes could be reconstructed by the results of these studies and by the spatial analysis of the Bronze Age tool marks. Finally, the trimming efficiency of these objects were also implied and these woodworking skills could be quantified in the case of a Bronze Age wooden construction from Austria. The proposed GIS-based tool mark segmentation and comparison can offer an objective, user-independent technique for the related intangible heritage interpretations in the future.

ERGONOMIC ANALYSIS OF HAND TOOLS FOR CAR SERVICE CONDITIONS. RESULTS OF THE STUDY. PART 2

2020 ◽  
Vol 264 (4) ◽  
pp. 10-21
Author(s):  
Nataliiа Borodina ◽  
◽  
Serhii Cheberiachko ◽  
Oleg Deryugin ◽  
◽  
...  
Keyword(s):  
Musculoskeletal System ◽  
Occupational Diseases ◽  
Assessment Method ◽  
Working Environment ◽  
Manual Labor ◽  
Hand Tools ◽  
Labor Conditions ◽  
Industrial Enterprises ◽  
Hand Tool ◽  
Ergonomic Analysis

It was determined that injuries and the occurrence of occupational diseases of the limbs (fingers, hand, elbow, forearm, shoulder, etc.) of the musculoskeletal system of workers of car service enterprises when performing production activities for the maintenance and repair of cars, in which a hand tool is used, is a quite common phenomenon that currently constitutes a task of research of current importance. Object of the study – ergonomic risks arising while working with hand tools. Purpose of the study – to assess the ergonomic risks of the limb’s injuries and of the occurrence of occupational diseases of the musculoskeletal system of the worker while using hand tools at car repair entities. Method of the study – to use the «TILE» («Task, Individual, Load, and Environment») principle for study of the upper limbs of the human body biomechanics. This principle indicates the need for a physiological assessment of manual labor (weight, rhythm, pace, intensity, etc.) and for a verification of the adequacy of manual labor conditions and the working environment and of their impact on employee health. To calculate the ergonomic risk of injury and the occurrence of occupational diseases, the «RULA» («Rapid Upper Limb Assessment») method was used, with the assistance of which the conformity of the ergonomics of hand tools to the working conditions has been assessed. Results of the study – discovered that use of the ergonomic tools can reduce the ergonomic risks of limb’s injury and occupational diseases of the musculoskeletal system of the worker, as well as increase productivity by up to 30%. Recommendations for rational sizes and shapes of various hand tools are given. The results of the study can be used for further development of the assessment of ergonomic health risks of workers in industrial enterprises. Keywords: technological processes of a car service, risk management of workers’ injuries, ergonomic risks, hand tools, labor productivity.

EVALUATION OF DIFFERENT TYPE OF GLOVE USING VIBRATING HAND TOOL

2015 ◽  
Vol 76 (6) ◽  
Author(s):  
Nurul Hanna Mas’aud ◽  
Bulan Abdullah
Keyword(s):  
Manufacturing Industry ◽  
Manufacturing Industries ◽  
Satisfaction Survey ◽  
Vibration Exposure ◽  
Satisfaction Level ◽  
Health Issues ◽  
Hand Tools ◽  
Hand Tool ◽  
Different Types ◽  
The Common

The paper presents satisfaction survey of the glove conditions while using vibrating hand tool in a manufacturing industry. The effects of vibration can cause health issues to the workers especially to those who are using vibrating hand tools. Hand held vibrating tools have become the common use in the manufacturing area. A study stated that many researchers have found that vibration exposures have become a common health problem in manufacturing industries. The research scope and objectives are to evaluate the satisfaction level of the workers using different types of gloves as well as to see how effective they are at reducing vibration exposure. The input data were collected by satisfaction survey among 30 respondents. There are three types of gloves conditions; (i) without glove, (ii) knitted glove and (iii) fingerless anti-vibration glove. The comparison of worker’s satisfaction level between these three conditions was summarized. It clearly showed that the use of fingerless anti-vibration glove is the most comfortable among the workers. The main advantage is that the fingers and thumb remain uncovered resulting in unconstructed movements.

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