Evaluation of Helmet Protection during Impact of Head to Ground and Impact of an Object to Head Using Finite Element Analysis

Abstract

This report describes the results of a research project focused on helmet protection under impact of head to ground, and impact of an object to head. Three kinds of helmets were considered: construction, motorcycle and bicycle helmets. The goal of this project is to check the amount of stress absorbed by the skull and brain during the impact, as well as evaluate the maximum capacity of helmet protection. The material used for each helmet was the most common material in the current market, in order to make the results more realistic. The analysis consists of dynamic simulation of an impact in the helmet using Finite Element Analysis (FEA). First, the models were meshed using Hypermesh. After the modeling phase, analyses were made using ABAQUS (a computer aided engineering program) that shows the stresses and displacements experienced by the whole system: helmet, skull and brain. The results obtained from the analysis were displayed on charts that show the effect of the helmet based on different boundary conditions such as object height for the hard hat, and the rider speed for the bicycle and motorcycle helmets.

Safety Helmet Implementation with Centralized Information System on Remote Monitoring Applications

“…The threshold of the carbon monoxide gas content in the air is ≥25 parts per million (ppm), and in normal free air reaches a concentration of about 20 ppm [6]. From the results of 30 times the measurement of carbon monoxide gas using the MQ-7 sensor obtained average value of normal carbon monoxide gas condition of ± 20.47 ppm, vehicle combustion smoke and waste in large scale of ± 23.56 ppm as shown in Figure 6.…”

“…One of the personal protective equipment for construction, mine, or electrical work is a helmet that generally serves as a protector of [6] falling objects, withstand blows, retains water and fire. Protective helmets commonly used by workers are still protecting the individual personally but have not been able to send the workers condition information to others so that evacuation or early rescue action is difficult to do in the event of an accident so that a smart monitoring system is needed for workers who can reduce the number of accidents and work protection [7][8].…”

Analisis Kesehatan Dan Keselamatan Kerja Dengan Metode Hirarc, Jsa Dan Swift Di Perusahaan Kerupuk Ud. Xyz

“…Pekerjaan yang terakhir yaitu dengan menyediakan perlindungan pernafasan respirator yang melindungi pekerja dari asap yang membahayakan pernafasan pekerja. Dengan adanya pengendalian risiko yang sesuai dengan kebutuhan pada setiap proses pengerjaan dapat mengantisipasi terjadinya kecelakaan yang tidak diinginkan (Jacob et al, 2015).…”

“…Menggunakan welding shields untuk melindungi wajah dari percikan api dan pelindung badan berbahan kulit agar terlindungi dari suhu panas atau api. Dari Tabel di atas dapat dilihat bahwa kurangnya APD (Alat Pelindung Diri) yang diberikan maupun disediakan kepada para pekerja oleh karena itu setiap pekerjaan di UD.XYZ diperlukan keamanan lebih yaitu menyediakan APD sehingga dapat memberikan keamanan dan terhindar dari risiko yang telah diperkirakan seperti pada tabel bahaya dan potensi risiko, diperlukannya penanganan lebih lanjut dari perusahaan agar dapat dipastikan setiap karyawan menggunakan APD yang sesuai (Jacob et al, 2015).…”

Prediction of impact response in construction safety helmet using FEA

“…Long et al (2015) developed a biomechanical FE model of human head to study the effectiveness of construction safety helmet. Jacob et al (2016) developed a FE model of skull-brain to simulate and predict the responses of safety helmets under varying impact heights. Modified FE models of human head have been developed by Wu et al (2017) to assess the effect of neck and body mass during impact on a construction safety helmet and relative responses on head-brain model.…”