Overview of impulse current test standards and the impact on test equipment

Author(s):  
Carl-Hendrik Stuckenholz ◽  
Michael Gamlin
2018 ◽  
Vol 225 ◽  
pp. 06011 ◽  
Author(s):  
Ismail Ali Bin Abdul Aziz ◽  
Daing Mohamad Nafiz Bin Daing Idris ◽  
Mohd Hasnun Arif Bin Hassan ◽  
Mohamad Firdaus Bin Basrawi

In high-speed gear drive and power transmission, system impact failure mode always occurs due to the sudden impact and shock loading during the system in running. Therefore, study on the amount of impact energy that can be absorbed by a gear is vital. Impact test equipment has been designed and modelled for the purpose to study the impact energy on gear tooth. This paper mainly focused on Finite Element Analysis (FEA) of impact energy that occurred during simulation involving the impact test equipment modelling. The simulation was conducted using Abaqus software on critical parts of the test equipment to simulate the impact event and generate impact data for analysis. The load cell in the model was assumed to be free fall at a certain height which gives impact load to the test gear. Three different type of material for the test gear were set up in this simulation. Results from the simulation show that each material possesses different impact energy characteristic. Impact energy values increased along with the height of load drop. AISI 1040 were found to be the toughest material at 3.0m drop that could withstand up to 44.87N.m of impact energy. These data will be used to validate data in physical experiments in further study.


2002 ◽  
Vol 2002 (0) ◽  
pp. 239-240
Author(s):  
Qiang YU ◽  
Hironobu KIKUCHI ◽  
Keiji WATANABE ◽  
Manabu KAKINO ◽  
Noriyuki FUJIWARA ◽  
...  

Author(s):  
Munawar Muchlish ◽  
Mazda Eko Sri Tjahyono

The objective of this study was to determine and analyze the impact of TQM, Transformational Leadership (TL), and Executive Ability (EA) on improving sustainable competitive advantage (SCA) in MSMEs in Banten Province based on local leading potential. The method of distributing questionnaires is used in this study to collect primary data. This study's population consisted of all owners and managers of MSMEs in Banten Province. In contrast, the sample in this study is formed of the owners and managers of MSMEs of Local Leading Potential in Banten Province. Purposive sampling was being used in the study, as well as Warp PLS V. 7.0 and SPSS Version 25 test equipment. The findings of this study were as follows: (1) TQM had a significant positive effect on TL and SCA, but not on EA. (2) TL has a statistically significant positive effect on SCA and EA. (3) EA has a statistically significant positive effect on SCA. (4) TL mediates the effect of TQM on SCA and TQM on EA, and (5) EA does not mediate the effect of TQM on SCA. VAF (Variance Accounted For) has been used to calculate mediation effects.


2019 ◽  
Vol 13 (1) ◽  
pp. 9
Author(s):  
Sri Risma Yenny ◽  
Pulung Wicaksono

The purpose of this study is to find empirical evidence of the impact of tax amnesty and the modern administration system on taxpayer compliance on individual taxpayers in Lampung Province. The object chosen is the taxpayers having NPWP in Lampung Province.   The data  used  are  primary  data  obtained  by  distributing  questionnaires  to respondents and processed with Likert scale. The samples in this study were 114 people taken randomly. This research is a quantitative research with warpPLS 3.0 test equipment to process data obtained from questionnaires. The results of the study show that tax amnesty as well as the modern administration system has a significant effect on taxpayer compliance.                                               Keywords: Tax Amnesty, Modern Administration System, Taxpayer Compliance


Author(s):  
J Latchford ◽  
E. C. Chirwa

The function of a head restraint system is to prevent injurious hyperextension of the occupant's neck in the event of a road vehicle rear end impact, and thus it must have adequate stiffness to limit the movement of the head relative to the torso. Also, it should absorb the kinetic energy progressively so that the head does not sustain any injury and does not roll on the cushion. Practically, a well-designed head restraint will have an optimum balance of these features and thereby offer adequate protection for both the head and the neck. This paper presents some pioneering thinking on head restraint design and develops criteria for qualifying the systems. It presents an airbag head restraint system that has optimum stiffness and good potential for reducing head and neck injuries suffered through rear end collisions. It also presents the results of experimental tests conducted on this novel airbag head restraint system and on several randomly selected existing head restraints. Furthermore, analysis of energy absorption capabilities, head injury criterion (HIC) values and a new criterion, called the equivalent impact power criterion (EIPC), is developed in order to quantify the relation between the rate at which energy is imparted to the head during the impact cycle and injury severity. Current test results show that, the lower the EIPC, the better is the head restraint system and the less is the risk of whiplash and head injuries. Moreover, the work has quantified a number of variables, including the optimum stiffness, as the factors governing the severity of injury to the occupant in a rear impact scenario.


Sign in / Sign up

Export Citation Format

Share Document