• Title/Summary/Keyword: Pole side impact

Search Result 10, Processing Time 0.018 seconds

A study on development of the pole side impact sled test using WorldSID (WorldSID를 이용한 기둥측면 충돌 슬레드 시험 개발 방법 연구)

  • Oh, Hyungjooon;Kim, Seungki;Lim, Kyungho
    • Journal of Auto-vehicle Safety Association
    • /
    • v.5 no.2
    • /
    • pp.5-10
    • /
    • 2013
  • The pole side crash caused fatal injury by comparison with other crash impact mode such as frontal and rear crash. EuroNCAP proposed the pole side crash test using WorldSID(World Side Impact Dummy). The objective of this study is to develop the pole side impact sled test using dummy rib deflection between crash and sled test. In the pursuit of this purpose, we fabricated new pole side sled buck and test preliminary pole sled using ES-2re. Through this, we found the sled acceleration pulse scale. Hardness and thickness of the EPP affects the rib deflection. We conducted the pole sled test using WorldSID based on the preliminary results. As a result, rib deflection was shown to correlate well between crash test and pole side sled test.

A Consideration on the Results of Side Impact and Pole Side Impact Tests in 2011 KNCAP (2011 KNCAP 측면충돌 및 기둥측면충돌 시험결과 고찰)

  • Lee, Dongjun;Choi, Youngtae;Lee, Kwangwon;Lim, Jaemoon
    • Journal of Auto-vehicle Safety Association
    • /
    • v.3 no.2
    • /
    • pp.22-27
    • /
    • 2011
  • The side impact test in the Korean New Car Assessment program (KNCAP) has been conducted since 2003. The side impact test method has been contributed to the improvement of the vehicle side structure and the enhancement of the occupant protection performance for the domestic vehicles. The pole side impact test method introduced in the KNCAP in 2010 to enhance the head protection under the severe side crash environment. The pole side impact test is optional for the additional score to be added to the overall rating score. The test results of side and pole side impact test for five vehicles were introduced and compared.

Safety Evaluation of Korean New Car Assessment Program - Side Impact (자동차 측면 충돌 안전도 평가 분석)

  • Shin, Jaeho;Yong, Gee Joong
    • Journal of Auto-vehicle Safety Association
    • /
    • v.6 no.2
    • /
    • pp.12-17
    • /
    • 2014
  • The number of vehicle accidents related to the side impact has increased since 1990 in Korea, thus the side impact test has been performed as one of the major vehicle evaluations of the Korean New Car Assessment Program(KNCAP) in 2003. A total of 77 vehicles of eight different types(compact, small, semi-midsize, midsize, and large sedans and small, midsize, and large sports utility vehicles) were tested in side impact and side pole impact conditions. In this study, the head and thorax injury values(HICs and chest deflections) of the side impact tests performed between 2003 and 2013 were investigated in terms of vehicle type, test year, and test condition. The recent vehicles showed better safety performances(lower injury values) and similar injury patterns were obtained between side impact and pole side impact tests.

Simulation Analysis for Comparison of WorldSID and ES-2re Dummy in Pole Side Impact Test Methods (기둥측면충돌시험법에서 WorldSID와 ES-2re 더미 안전성에 대한 해석적 연구)

  • Youn, Y.H;Han, W.;Choi, M.;Lee, E.;Kim, D.
    • Journal of Auto-vehicle Safety Association
    • /
    • v.4 no.2
    • /
    • pp.27-31
    • /
    • 2012
  • In Korea, side impact type accidents are one of the main cause of fatality. MLTM and KATRI established sie impact regulation as well as NCAP type assessments to protect occupants. Recently, WP29 formed a informal group to study a possible harmonization of pole side impact test methods with WorldSID as a GTR. In this paper, two different dummies, ES-2 and WorldSID were evaluated with three different types of pole side impact test methods.

Experimental Study on a New Test Method for Pole Side Impact (새로운 기둥측면충돌 시험방법에 관한 실험적 연구)

  • Kim, Dea Up;Woo, Chang Gi
    • Journal of the Korean Society of Manufacturing Technology Engineers
    • /
    • v.24 no.6
    • /
    • pp.613-618
    • /
    • 2015
  • In recent years, WorldSID has been continuously developed and investigated to be the representative biofidelic anthropomorphic test device (ATD) as well as the device for replacement of the current EuroSID-2. In Korea, the side impact accident is one of the major severe accidents in terms of the number of accidents and fatality. Since 2003, the side crash test with a speed of 50 kph in the perpendicular direction has been initiated as a safety standard with EuroSID-1 at the first stage. Simultaneously, a 55 kph impact test has been conducted as a part of Korean New Car Assessment (KNCAP). Currently, only EuroSIDE-2 is accepted as a regulatory tool for vehicle certification and KNCAP. The tests with WorldSID are conducted experimentally in order to use WorldSID of the KNCAP in near future.

Evaluation of EuroSID-2 & WorldSID in Pole Side Impact (기둥측면충돌시험에서 EuroSID-2와 WorldSID 인체모형 평가에 관한 연구)

  • Kim, Dea Up;Woo, Chang Gi
    • Journal of Auto-vehicle Safety Association
    • /
    • v.7 no.1
    • /
    • pp.40-44
    • /
    • 2015
  • In recent years, WorldSID dummy has been continuously developed and investigated to be a better represent biolfidelic ATD as well as a device for replacement of the current existing EuroSID-2. In Korea, the side impact accident is one of the major severe accidents in terms of numbers of accidents and fatality. Since 2003, 50kph 90degree side crash test has been initiated as a safety standard with EuroSID-1 at the first stage and also same time 55kph impact speed test has been conducted as a part of KNCAP program. Currently only EuroSID-2 is accepted as a regulatory tool for vehicle certification and KNCAP. In order to make use of WorldSID of KNCAP in the distant futuer the tests with WorldSID is conducted experimentally.

Injury Optimization Study of WorldSID and EuroSID2re under Pendulum Loadings (진자시험을 통한 EuroSID2 및 WorldSID 더미의 상해 최적화 연구)

  • K.S. Choi;K.S. Jeong;K.C. Kim;B.R. Ham
    • Journal of Auto-vehicle Safety Association
    • /
    • v.6 no.1
    • /
    • pp.41-47
    • /
    • 2014
  • A new dummy has improved biofidelity from Fair to Good compare with EuroSID2re which is currently used for regulation tests and NCAP tests. Some instrumentation of each body region has been changed to measure the assessment of injury risk. The objective of this study is to find out the injury characteristic of each dummy and to calculate the relation between external force and injury for each dummy with pendulum tests. Finally, this study suggests the optimized external force to meet consumer tests. A new dummy named WorldSID for side impact will be introduced into EuroNCAP tests after 2015. Korea government is also planning to adopt WorldSID at KNCAP tests from 2017 and Global Technical Regulation (GTR) will also adopt WorldSID to oblique side pole crash.

Simulation Analysis and Comparison of New Frontal Impact Tests (신 정면 충돌 시험의 시뮬레이션 비교 분석)

  • Jung, Kyungjin;Youn, Younghan;Park, Jiyang;Kim, Dongseup;Oh, Myoungjin;Kwak, Youngchan;Son, Changki;Shin, Jaekon;Lee, Eundok;Kwon, Hae Boung
    • Journal of Auto-vehicle Safety Association
    • /
    • v.9 no.2
    • /
    • pp.20-25
    • /
    • 2017
  • KNCAP is a program to evaluate the automobile safety, providing consumer vehicle safety assessment results. The safety evaluation tests are Frontal Impact, Offset Frontal Crash, Side Crash, Side Pole Crash, Rear Impact. This is the study of the offset frontal impact safety evaluation. Currently, IIHS is performing a small overlap test. NHTSA plans to implement the oblique moving deformable barrier test. Euro-NCAP plans to implement a mobile frontal impact test. Simulation is used to compare occupant behavior and injury. We have investigated whether the introduction of the test at KNCAP is necessary. The dummy model used in the simulation was the 50th percentile male Hybrid III dummy.

Cogging Torque Reduction in Line Start Permanent Magnet Synchronous Motor

  • Behbahanifard, Hamidreza;Sadoughi, Alireza
    • Journal of Electrical Engineering and Technology
    • /
    • v.11 no.4
    • /
    • pp.878-888
    • /
    • 2016
  • Cogging torque has a negative impact on the operation of permanent magnet machines by increasing torque ripple, speed ripple, acoustic noise and vibration. In this paper Magnet Shifting Method has been used as a tool to reduce the cogging torque in inset Line Start Permanent Magnet Synchronous Motor (LSPMSM). It has been shown that Magnet Shifting Method can effectively eliminate several lower-order harmonics of cogging torque. In order to implement the method, first the expression of cogging torque is studied based on the Fourier analysis. An analytical expression is then introduced based on Permanent Magnet Shifting to reduce cogging torque of LSPMS motors. The method is applied to some existing machine designs and their performances are obtained using Finite Element Analysis (FEA). The effect of magnet shifting on pole mmf (magneto motive force) distribution in air gap is discussed. The side effects of magnet shifting on back-EMF, core losses and torque profile distortion are taken into account in this investigation. Finally the experimental results on two prototypes 24 slot 4 pole inset LSPMS motors have been used to validate the theoretical analysis.

USING REMOTE SENSING TO DETECT THE COASTLINE CHANGE FOR MANGROVE REPLANTATION AT BAN LAEM SING, CHAO PHRAYA RIVERMOUTH, IN THE GULF OF THAILAND

  • Siripong, Absornsuda
    • Proceedings of the KSRS Conference
    • /
    • v.2
    • /
    • pp.535-538
    • /
    • 2006
  • The coastline of the Choa Phraya Rivermouth in the Upper Gulf of Thailand has been changed drastically. The western side especially at Ban Laem Sing was eroded for 400 meter in 26 years or with the rate of 15 meter per year on the average. The Metropolitan Electricity Authority has granted five years research project to us to study the efficiency of the electric pole fence as a mean to reduce the wave force and increase sedimentation rate inside for mangrove replantation. If the method works efficiently, it will be used to reclaim the coastal land loss in other areas in Thailand. The project was done since 2005 after the fence was constructed completely in October 2005. The oceanographic surveys were conducted before and after the construction in northeast monsoon season to study the impact of physical oceanographic forces on the coastline change. The sedimentation rates were measured each month. It is rather low about 2 cm/month. The subsiding rate from the load of deltaic sediment and groundwater withdraw using boring data is about 30 mm/year. The cumulative sinking rate is 55.8 cm from 1978 to 1995. We have tried to design the method of mangrove plantation in this area. The remote sensing data such as LANDSAT and aerial photos from 1987 to 2002 for 15 years were used to compute the rate of coastline change at each 50 m section along the western side of the rivermouth.

  • PDF