1 korea gtr no.7 2 nd phase research results dec. 8, 2009 ministry of land, transport and maritime...

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KOREA GTR No.7 2nd Phase Research Results

Dec. 8, 2009

Ministry of Land, Transport and Maritime Affairs, Ministry of Land, Transport and Maritime Affairs,

Korea Automobile Testing and Research InstituteKorea Automobile Testing and Research Institute

GTR7-01-07

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Actively research & Coop.Actively research & Coop.Actively research & Coop.Actively research & Coop.

KOREA

Backgrounds - regulatory

호 주

USAFMVSS

ECERegulations

SafetyStandards

KOREASafety

Standards

CANADACMVSS

EuropAsia

NorthAmerica

1998 협정

(GTR)Global

TechnicalRegulations

JAPANSafety

Standards

EECDirectives

Headrest. KMVSS upgrade plan During GTR 7 discussion, KOREA considered

harmonization with lead time, etc.

All possible GTR options will be considered on KMVSS.

Phase I GTR will be adopted as KMVSS in 2010.Before GTR introduce in KMVSS,

make the program (gov)

Adopting in KNCAPAdopting in KNCAP &&Lead Good H/R Performance Lead Good H/R Performance

Offer the advantage of design preceding, etc.Offer the advantage of design preceding, etc.

Static Dynamic

+

GTR No.7 Publish

(2008.3)

KNCAP

KMVSS Discuss with MLTM

GTR2nd Phase start

20052005 년 년 // 2006// 2006 년년 -2007-2007 년 년 // 2008// 2008 년 년 // 2009// 2009 년년 20052005 년 년 // 2006// 2006 년년 -2007-2007 년 년 // 2008// 2008 년 년 // 2009// 2009 년년

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Objective of KOREA Research

GTR 2nd Phase Terms of reference

Head restraint Height

Whiplash Injury (MAIS1 or MAIS 2 more)

Define Test procedures

- Test condition

- Clarify the mechanism of whiplash injury

- Evaluation of BioRIDII

- Evaluation of Indicator

- Feasibility studies etc.

Objective

Harmonization of GTR No. 7 in KMVSS

Global cooperation for Head restraints

GTR Phase II

Work Scop

GTR No.7 Phase II

- Head restraints height : Effective height

in KOREA

- Dynamic Test

• Evaluation of BioRIDII : Repeatability,

Reproducibility

• Evaluation injury indicator in BioRIDII

• Check the BioRIDII calibration procedures

GTR

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Stage 2(2009)

Head Restraints Height

Harmonization GTR No.7Harmonization GTR No.7

GTR No.7 Phase IIGTR No.7 Phase II

BioRID II

Discuss with MLTMGTR No.7 Review

Statistic review & Test Additional Test

Repeatability Test

BioRID II propriety review

Stage 1(2008)

Reproducibility TestGTR No. 7 2nd Amendment

Over all Research Schedule

New Cal. system Test

2010 will be published

.

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Evaluation of BioRIDII performance

Test Condition Dummy & Number of tests

- Denton 3 different BioRIDII-g (S1, S3, S4)[ Dummy was calibrated before the test.]

- 3 times Test in KATRI(engineer also KATRI persons)

Pulse : KNCAP (Same as the E-NCAP Medium pulse 16km/h)

Seat & Head restraints setting : KNAP(Same as the the E-NCAP )

Neck injury indicator :

- Head X acc, Nkm, NIC, HRC, T1 X acc, Upper-Fx –Fz -My, Lower-Fx, -Fz,- My

Location Target measure Tolerance

H-point (X-axis) +20mm Forward ±10mm

H-point (Z-axis) 0mm ±10mm

Pelvis angle 26.5° ±2.5°

Head plane angle 0° ±1°

Backset 15mm Forward ±5mm

[ BioRID Setup Summary ][ Seld Pulse ]

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Evaluation of BioRIDII

Method of Evaluation

Repeatability C.V = 100 (%) XX

Sd

X 　　 = 　 Mean value of each dummy

Sd ＝ Standard deviation of each dummy

S B

X

S

X G

Reproducibility C.V = 100 (%)

SB 　 = 　　　n

1/2MSB-MSW XG 　 = Mean value of 3 dummies

MSB : Mean square between groups (dummies) MSW : Mean square in a group (each dummy) n : Number of repetitions of test

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Seat condition & Dummy setting

SgRP to 머리지지대 최상단 높이- SAMPLE NO.1 : 840 ±10- SAMPLE NO.2 : 840 ±10- SAMPLE NO.3 : 850 ±10- SAMPLE NO.4 : 800 ±10

ⓐ

ⓑ

ⓔ

ⓒ

ⓓ

Measurement C.V

HRMD Measurement

S1S3S4

S1S3S4

S1S3S4

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Results of Repeatability Evaluation

C.

V .

Head X repeatability in all dummy is good. Among 3 dummies, each C.V. does not show

consistency but graphs are pretty similar. Even though BioRID calibrated, repeatable variation

has been depend on dummy.

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Results of Reproducibility Evaluation

Upper Fx & My, Lower Fz, Nkm_Nfa

are not acceptable indicators during the test.

Nkm_fa

ESV paper by Japan(09-0302)ESV paper (09-0492)

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Evaluation of BioRIDII – Test site variation

Test Condition Dummy : BioRIDII-g 1 test each site.

Test Site : 2 different site (Hyundai, Dymos)

Pulse : KNCAP (Same as the E-NCAP Medium pulse 16km/h)

Seat : same seat, other conditions same repeatability test

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Head X HRC T1 Acc

Upper Fx Upper Fz:

about 100N

Upper My :

about 7 Nm

Evaluation of BioRIDII – Test site variation

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Purpose

- Neck Injury indicators analysis comparing

800 & 850mm H/R height Test condition

- Pulse : K-NCAP

(E-NCAP medium pulse)

- Seat setting : K-NCAP

- Dummy : Denon BioRID Iig (KATRI)

- Head restraint height : 800, 850mmHeadrest. height 800mm Headrest. height 850mm

Head Restraint Height – Non Active Seat Review of KOREA Anthropometry statistics,

the reasonable height of Head Restraint is 800mm

0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.2

000000000000TI00 [s]

-5

-2.5

0

2.5

5

7.5

10

12.5

Acc

(g)

T1 SPINE ACC X-AVERAGE_CFC_60_800mm

T1 SPINE ACC X-AVERAGE_CFC_60_850mm

H/R Height 800mm & 850mm

Data DescriptionTest No.:

Mode: BARRIER, NOT DEFINED

Test Velocity: [KPH]

Test Date:

Vehicle Code :

Pulse_ID:

Occupant InformationDummy Type : H3 AM50

Channel InformationS0VEHCMIAV00ACXG

Unit: g

Filter : CFC_60

Max. 10.27 g at 27 ms

Min. -1.19 g at 103 ms

# Velocity(kph)

Max. 15.54 KPH at 88 ms

T1 ACC

# Acceleration

0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.2

000000000000TI00 [s]

-200

0

200

400

600

800

1000

N

UPPER NECK FZ-CFC_1000_800mm










Test Date:

Vehicle Code :

Pulse_ID:



Unit: g

Filter : CFC_60

Max. 10.27 g at 27 ms

Min. -1.19 g at 103 ms

# Velocity(kph)


Fz

# Acceleration

0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.2

000000000000TI00 [s]

-40

-30

-20

-10

0

10

20

30

NIC_800mm

NIC_850mm





Test Date:

Vehicle Code :

Pulse_ID:



Unit: g

Filter : CFC_60

Max. 10.27 g at 27 ms

Min. -1.19 g at 103 ms

# Velocity(kph)


NIC

# Acceleration

T1 Acc av Upper Fz NIC

Indicators on 800mm height H/R are slightly higher than 850mm height H/R But not a big different.

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Evaluation of BioRIDII Calibration procedures

Current Version New Version : Changed part

Changed Parts : Head Rest Jig, Foam block, Probe, Sliding guild.

Evaluation

Repeatability Test : Graphs review

Dummy : 4 ea Denton BioRIDII-g

Test condition : Each dummy passed the current cal procedures and then

3 or 4 tests of each dummy were conducted on the new cal. system with H/R & not.

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New sled without H/R Jig Cal. Result Graphs

Each dummy shows repeatable but there are some discrepancy with dummies.

New Sled Old SledNew Sled Old Sled

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New sled wit H/R Jig Cal. Result Graphs

Each dummy shows repeatable but there are some discrepancy with dummies.

(Upper Neck Fx, My, Lower Neck Fx, Fz, My)

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Other Issue

Pendulum force on new sled system is much higher then old version, so head & neck movement is too

strong and too much. It’s cause of neck bumper separation during the calibration test.

During the cal. test setup, sled keep moving, need fixing jig.

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Evaluation of BioRIDII – Denton & FTSS

Test Condition Dummy : BioRIDII-g Denton & BioRIDII FTSS.

Test Site : KATRI, Test setup : same condition (repeatability test condition)

Test number : 3 times

Before

After

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Evaluation of BioRIDII – Denton & FTSS

Head X T1 Acc

Upper Fx

Upper Fz

Upper My Lower My

Head X repeatability in two dummies are good.

Upper Fx is not acceptable with two dummies

Upper Fz & My & Lower My in Denton BioRID and

Upper Fz in FTSS BioRID is not acceptable for

repeatability analysis.

C.

V .

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Summary

Result data for neck injury indicators on BioRIDII

- Repeatability : S1 & S3 dummy is marginable but S4 dummy is not acceptable.

- Reproducibility : Not acceptable for Upper Fx, Upper My, Lower Fz, & Nkm.

Similar results submitted last ESV. (Japan & Europe)

- Results of different site test are similar except upper Fz & My.

With repeatability & reproducibility issues, we may suggest some robust indicator after

full consideration for neck injury mechanism in stead of neck injury indicator.

→ In terms of the regulation, small variation of seat condition must be acceptable.

(Seat is not rigid structure)

Neck injury indicators on 800mm HR were slightly higher than 850m HR but not a big

different each other.

New cal. system shows good repeatable but the results between dummies are

different. (Need further study)

Neck injury indicators on Denton & FTSS BioRIDII are similar with each other.

1 korea gtr no.7 2 nd phase research results dec. 8, 2009 ministry of land, transport and maritime...

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