ISO/TR 27957:2020

Road vehicles - Temperature measurement in anthropomorphic test devices - Definition of the temperature sensor locations

This document defines the number and the arrangement of temperature measuring points for anthropomorphic test devices in order to ensure that the temperature of the ATD is in accordance with the temperature corridor prescribed by the applied test procedure.

Véhicules routiers — Mesure de la température dans les dispositifs d'essai anthropomorphes — Définitions des positions des capteurs de température

General Information

• Status: Published
• Publication Date: 22-Apr-2020
• ICS: 43.180 - Diagnostic, maintenance and test equipment
• Technical Committee: ISO/TC 22/SC 36 - Safety and impact testing
• Drafting Committee: ISO/TC 22/SC 36/WG 3 - Instrumentation
• Current Stage: 6060 - International Standard published
• Start Date: 23-Apr-2020
• Due Date: 02-Jul-2019
• Completion Date: 23-Apr-2020

Relations

• Consolidated By: ISO 7784-3:2022 - Paints and varnishes - Determination of resistance to abrasion - Part 3: Method with abrasive-paper covered wheel and linearly reciprocating test specimen
• Effective Date: 06-Jun-2022
• Revises: ISO/TR 27957:2008 - Road vehicles - Temperature measurement in anthropomorphic test devices - Definition of the temperature sensor locations
• Effective Date: 05-Aug-2017

Overview

ISO/TR 27957:2020 - "Road vehicles - Temperature measurement in anthropomorphic test devices - Definition of the temperature sensor locations" - is a technical report that defines the number, arrangement and acceptable tolerance of temperature-measuring points on anthropomorphic test devices (ATDs). Its purpose is to ensure ATD temperatures comply with the temperature corridor required by the applied test procedure and to improve comparability of test results between laboratories.

Key topics and technical requirements

• Sensor locations and tolerance: The report specifies precise sensor placement on ATDs (with a positional tolerance typically expressed as a 25 mm radius) so readings represent temperature-sensitive parts used for injury assessment.
• ATD families covered: Informative annexes A–G provide device-specific locations for common ATD families, including Hybrid‑III, SID‑IIs, ES‑2 / ES‑2re, WorldSID (5 & 50), THOR‑M (5 & 50), Q‑Children, and BioRID. Annex additions in the 2020 edition broaden coverage to multiple devices.
• Mounting and coupling: Temperature sensors are to be mounted without modifying the dummy’s structure or performance and must be thermally coupled to the ATD surface (sensors typically mounted on damping material or inner surfaces as indicated).
• Equipment and data logging: The document addresses equipment requirements for temperature measurement and data logging to support reproducible temperature verification during testing.
• Normative reference: ISO/TR 27957 refers to ISO 6487 for measurement techniques in impact tests and related instrumentation terminology.

Practical applications and users

Who uses ISO/TR 27957:2020:

• Vehicle manufacturers and component suppliers performing crash and occupant protection testing.
• Independent test laboratories and certification bodies validating ATD readiness and conformity with temperature corridors.
• ATD manufacturers integrating or recommending sensor positions during design and calibration.
• Regulators and standards committees seeking harmonized measurement practice across test facilities.
• Research organizations conducting biomechanics and safety systems development.

Why it matters:

• Ensures consistent ATD temperature verification so that injury metrics are comparable across tests and labs.
• Reduces variability caused by inconsistent sensor placement, improving data quality for regulatory compliance, certification, and research.

Related standards

• ISO 6487 - Road vehicles: Measurement techniques in impact tests - Instrumentation (normative reference used by ISO/TR 27957).
• Device-specific manufacturer guidance and regional crash-test regulations should be consulted alongside ISO/TR 27957 for full compliance.

Keywords: ISO/TR 27957:2020, temperature measurement, anthropomorphic test device, ATD, temperature sensor locations, crash testing, Hybrid‑III, WorldSID, THOR, Q‑Children, SID‑IIs, ISO 6487.

Standards Content (Sample)

TECHNICAL ISO/TR
REPORT 27957
Second edition
2020-04
Road vehicles — Temperature
measurement in anthropomorphic
test devices — Definition of the
temperature sensor locations
Véhicules routiers — Mesure de la température dans les dispositifs
d'essai anthropomorphes — Définitions des positions des capteurs de
température
Reference number
©
ISO 2020
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2020 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Equipment for temperature measurement and data logging . 1
5 Arrangement of temperature sensors in anthropomorphic test devices.1
Annex A (informative) Hybrid-III . 2
Annex B (informative) SID-IIs .12
Annex C (informative) ES-2 and ES-2re .14
th th
Annex D (informative) WorldSID 5 + 50 .16
th th
Annex E (informative) THOR-M 50 + 5 .18
Annex F (informative) Q-Children .20
Annex G (informative) BioRID .28
Bibliography .30
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
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expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 36,
Safety and impact testing.
This second edition cancels and replaces the first edition (ISO/TR 27957:2008), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— the addition of Annexes D to G to include temperature positions for multiple devices.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved

Introduction
This document proposes the number and the arrangement of the temperature measuring points in
anthropomorphic test devices (ATDs). The proposal is based on several studies and is intended to
ensure that the temperature of the ATD is in accordance with the temperature corridor prescribed by
the applied test procedure.
The temperature sensitivity of ATD components has long been recognized. All ATDs used for testing
in accordance with current test procedures have prescribed temperature ranges for certification and
testing. However, the procedure for verifying ATD temperature can vary from one testing facility to
another. To improve the comparability of test data between laboratories, it is considered necessary to
define a single practice for the measurement of ATD temperature.
TECHNICAL REPORT ISO/TR 27957:2020(E)
Road vehicles — Temperature measurement in
anthropomorphic test devices — Definition of the
temperature sensor locations
1 Scope
This document defines the number and the arrangement of temperature measuring points for
anthropomorphic test devices in order to ensure that the temperature of the ATD is in accordance with
the temperature corridor prescribed by the applied test procedure.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6487, Road vehicles — Measurement techniques in impact tests — Instrumentation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6487 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 Equipment for temperature measurement and data logging
The temperature measurement sensor is mounted with no modifications of dummy structure and
performance. The temperature measurement sensor is thermally coupled to the surface according to
the figures
5 Arrangement of temperature sensors in anthropomorphic test devices
The locations represent the temperature sensitive parts of the dummies whose readings are consulted
for the assessment of the risk of injury. The choice of the sensor locations is feasible and crash-proof.
The sensor locations are chosen in accordance with anthropomorphic test device manufacturer
recommendations that are derived from tests conducted during the design process. When such
recommendations are not available, the sensor locations are chosen in accordance with other available
temperature studies.
The number and the exact locations of the temperature sensors for the different types of
anthropomorphic test devices are indicated in Annexes A to G, each annex corresponding to a particular
type of anthropomorphic test device or anthropomorphic test device family.
Annex A
(informative)
Hybrid-III
A.1 General
This annex defines the sensor locations for anthropomorphic test devices of the Hybrid-III family.
A.2 Temperature sensor locations
The Hybrid III family is equipped with one temperature sensor. The sensor is attached to the inner
rd
surface of the 3 rib (left or right side), except for the HIII 3 years old (YO) child, where the sensor is
nd
attached to the inner side of 2 (central) rib of the anthropomorphic test device. The sensor is mounted
on the damping material.
Different options for the position of the temperature sensor are marked with different labels.
The tolerance of this position is a circle with a 25 mm radius.
Figures A.1 to A.10 show the measuring points for anthropomorphic test devices of the Hybrid-III family.
A.2.1 Hybrid-III 3 YO
Key
nd
1 2 rib, left side (option 1)
nd
2 2 rib, right side (option 2)
Figure A.1 — Measuring point for the Hybrid-III 3 YO, view front and left side
2 © ISO 2020 – All rights reserved
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