IEC TS 62788-6-3-2022 PDF

Full title and description

Measurement procedures for materials used in photovoltaic modules - Part 6-3: Adhesion testing for PV module laminates using the single cantilevered beam (SCB) method. This IEC Technical Specification defines a generalized single cantilevered beam test for characterizing interfacial adhesion in PV module laminates, providing procedures to determine adhesion energy (critical energy release rate) for comparison of materials, samples and exposures.

Abstract

IEC TS 62788-6-3:2022 describes how to prepare specimens, perform the single cantilevered beam (SCB) test, reduce data and report results to obtain the critical energy release rate as a measure of interfacial adhesion in photovoltaic module laminates. The method is intended as a generalized procedure to support materials research, product development and comparative testing of laminate interfaces.

General information

• Status: Published / Current (Technical Specification).
• Publication date: 19 August 2022.
• Publisher: International Electrotechnical Commission (IEC), TC 82 (Solar photovoltaic energy systems).
• ICS / categories: 27.160 (Solar energy engineering).
• Edition / version: Edition 1.0 (2022).
• Number of pages: 32 pages (PDF edition).

Key bibliographic facts above are recorded on the IEC publication entry and corroborated by standard distributors and national adopters.

Scope

This TS provides a method for measuring adhesion energy of most interfaces within a PV module laminate using the single cantilevered beam (SCB) technique. It covers specimen geometry and preparation, test-fixture and load application, environmental and preconditioning considerations, data acquisition and calculation of the critical energy release rate, plus reporting conventions to enable comparison between different materials, coupons and modules. The document is intended as a generalized test procedure; specific applications or qualification tests may require additional or modified procedures.

Key topics and requirements

• Single cantilevered beam (SCB) test principle and rationale.
• Specimen preparation, geometry and recommended dimensions for laminate coupons.
• Test-fixture design, loading conditions and instrumentation requirements.
• Data reduction methods to compute the critical energy release rate (adhesion energy).
• Environmental conditioning and pre-test exposure guidance (where applicable).
• Reporting requirements and recommended information to allow result comparison (materials, laminate stack-up, sample history, test parameters).
• Limitations and intended use: comparative and research testing rather than full module qualification on its own.

Typical use and users

Used by PV material developers, encapsulant and backsheets suppliers, module manufacturers, independent test laboratories and research institutions to compare adhesive performance of interfaces within laminate stacks, to study the effects of aging or processing, and to support materials selection or failure analysis. The method is suited to R&D, incoming materials testing, and efforts to improve lamination or adhesion processes.

Related standards

IEC TS 62788-6-3 is part of the IEC 62788 measurement procedures series for PV module materials; related parts cover encapsulants, frontsheets/backsheets, edge seals and other material tests (examples include IEC 62788-1-x parts, IEC 62788-2-x and IEC 62788-6-2 for moisture permeation). These related documents provide complementary test methods and reporting guidance for PV materials.

Keywords

photovoltaic, PV, adhesion, laminate, single cantilevered beam, SCB, critical energy release rate, test method, TC 82, measurement procedures, interfacial fracture, materials characterization

FAQ

Q: What is this standard?

A: IEC TS 62788-6-3:2022 is a technical specification that defines a single cantilevered beam (SCB) test method for measuring adhesion energy of interfaces in photovoltaic module laminates.

Q: What does it cover?

A: It covers specimen preparation, test-fixture and loading details, data acquisition and reduction to determine the critical energy release rate, reporting conventions and guidance on applicability and limitations of the SCB method for PV laminates.

Q: Who typically uses it?

A: Material suppliers, module manufacturers, independent test labs and research groups use it for materials comparison, process development, failure analysis and R&D related to adhesion in PV modules.

Q: Is it current or superseded?

A: This document was published on 19 August 2022 as Edition 1.0 and is published as a Technical Specification; it is currently active (stability dates for availability are shown on the IEC record). Users should check the IEC webstore or national adopter for any amendments or newer editions before relying on it for conformity work.

Q: Is it part of a series?

A: Yes — it belongs to the IEC 62788 series (Measurement procedures for materials used in photovoltaic modules), which contains multiple parts addressing encapsulants, polymeric frontsheets/backsheets, edge seals, moisture permeation and other material test methods used in PV module characterization.

Q: What are the key keywords?

A: Adhesion; SCB; single cantilevered beam; critical energy release rate; PV module laminate; encapsulant; backsheet; test method; materials characterization.