ISO/TS 24110:2026

Technical
Specification
ISO/TS 24110
First edition
Plastics — Method of exposure to
2026-04
combined UV radiation and creep
load
Plastiques — Méthode d'exposition combinée au rayonnement UV
et au fluage sous charge
Reference number
© ISO 2026
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
5.1 General .2
5.2 Test device for combined exposure .2
5.3 Laboratory UV radiation source .2
5.3.1 General .2
5.3.2 Fluorescent UVA lamp.2
5.3.3 Fluorescent UVB lamp .2
5.3.4 Low pressure mercury UVC lamp .2
5.4 Radiometer .2
5.5 Black-panel/black-standard thermometer .2
5.6 Creep device .3
5.6.1 General .3
5.6.2 Loading system .3
5.6.3 Specimen grip .3
5.7 Assessment of changes in properties .3
6 Test specimens . 3
7 Test conditions for combined exposure . 3
8 Procedure . 4
8.1 General .4
8.2 Mounting of the test specimen .4
8.3 Combined exposure.5
8.3.1 Conditioning .5
8.3.2 Preloading .5
8.3.3 Loading .5
8.3.4 UV exposure .5
8.4 Extension measurement schedule .5
8.5 Time measurement for creep .5
8.6 Measurement of radiant exposure .5
8.7 Determination of the changes in properties after exposure .5
9 Test report . 5
Annex A (informative) Comparison of UV exposure and combined creep 10 %, 20 %, 30 % creep
load based on tensile yield strength . 7
Annex B (informative) Combined UV radiation and creep load test equipment .10

iii
Foreword
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iv
Introduction
Plastic components under UV irradiation can undergo accelerated degradation when they are exposed to
additional mechanical environmental or thermal stresses. Therefore, this document provides a test method
for simulated UV radiation effect superimposed by the mechanical load to evaluate the performance of the
material and components.
v
Technical Specification ISO/TS 24110:2026(en)
Plastics — Method of exposure to combined UV radiation and
creep load
1 Scope
This document describes a test method of exposing specimens to artificial UV radiation in combination with
a creep load. This method uses UV radiation source and ISO 899-1 for the tensile creep test. Fluorescent UV
lamps specified in ISO 4892-3 or UVC lamp can be used as UV radiation sources.
NOTE UVC exposure is described in IEC 60335-1.
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 527-1, Plastics — Determination of tensile properties — Part 1: General pri
...