EN 15336:2007

Adhesives - Determination of the time to rupture of bonded joints under static load ( ISO 15109:1998 modified)

This European Standard describes a procedure for the determination of the time to failure of a bonded joint, using a specimen which is statically loaded under specified conditions. This method can only be used for comparing adhesives, and the results cannot be used for design purposes.

Klebstoffe - Bestimmung der Zeit bis zum Bruch geklebter Fügeverbindungen unter statischer Belastung (ISO 15109:1998 modifiziert)

Adhésifs - Détermination du temps jusqu'à la rupture de joints collés soumis à une charge statique (ISO 15109:1998 modifiée)

La présente Norme européenne décrit une méthode permettant de déterminer le temps jusqu'à la rupture d'un joint collé en utilisant une éprouvette soumise à une charge statique dans des conditions spécifiées. Il s'agit uniquement d'une méthode de comparaison des adhésifs et les résultats ne peuvent en aucun cas être utilisés pour des besoins de conception.

Lepila - Določanje časa pretrganja lepljenih spojev pri statični obremenitvi (ISO 15109:1998, spremenjen)

General Information

• Status: Published
• Publication Date: 27-Feb-2007
• Withdrawal Date: 30-Aug-2007
• ICS: 83.180 - Adhesives
• Technical Committee: CEN/TC 193 - Adhesives
• Drafting Committee: CEN/TC 193/WG 2 - Structural adhesives
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 20-Oct-2023
• Completion Date: 14-Apr-2025
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Mandate: M/127 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on construction adhesives
• Ref Project: SIST EN 15336:2007 - Adhesives - Determination of the time to rupture of bonded joints under static load (ISO 15109:1998 modified)

Overview

EN 15336:2007 (CEN) specifies a laboratory procedure to determine the time to rupture of bonded lap-shear joints subjected to a static load. The method measures how long a bonded specimen endures a specified stress before failure and is intended for comparative evaluation of adhesives rather than for structural design. Key outcomes include time-to-failure, failure pattern classification and stress-vs-time relationships useful for product assessment and quality control.

Key Topics

• Principle: Measure time to rupture of a lap-shear specimen under a defined static load.
• Apparatus: A vertical test rig that secures specimens at one end and applies weights at the other. The rig must avoid cross-specimen vibration and maintain controlled environmental conditions. A timer with ±1 % accuracy is required.
• Specimens:
  • Adherends: metal, rigid plastic or rigid fibre-reinforced plastic.
  • Shape: lap-shear geometry per the standard (see Figure 1 in the standard document).
  • Bond-line control: use glass spheres (≤ 0.5 % mass of adhesive) or wire spacers (excluded from final test area).
  • Surface preparation: follow adhesive or adherend manufacturer instructions or EN 13887.
  • Conditioning: use one of the standard atmospheres in EN ISO 291.
  • Quantity: at least three specimens per stress level.
• Procedure: Attach specimens, allow equilibrium in the chosen atmosphere, apply defined loads (often a percentage of tensile lap-shear strength from EN 1465), and record time to failure and failure mode (EN ISO 10365).
• Results: Plot stress (ordinate) against average time to failure (abscissa) on a logarithmic time scale.

Applications

This method provides practical value in contexts such as:

• Comparative adhesive testing: rank adhesives by time-to-rupture under given stresses.
• Quality control: verify consistent adhesive performance between batches or processes.
• R&D: evaluate formulation changes, surface treatments, or curing regimes on long-term static performance.

Note: EN 15336:2007 results are specifically for comparison and test method development - they are not suitable for direct structural design or service-life prediction without additional data.

Related Standards

The standard references and complements these documents:

• EN 1465 - tensile lap-shear strength determination
• EN 13887 - surface preparation guidelines for metals and plastics
• EN ISO 291 - standard atmospheres for conditioning and testing
• EN ISO 10365 - designation of main failure patterns

Practical considerations

• Ensure accurate bond-line thickness and consistent surface treatment for comparable data.
• Maintain controlled environment during conditioning and testing to reduce variability.
• Record all identification details, specimen preparation, atmosphere, bond-line thickness, number of specimens, failure patterns and the stress vs time-to-failure graph in the test report as required by the standard.

This structured approach helps laboratories produce repeatable comparative data for adhesive selection, process control and formulation optimization while complying with CEN requirements.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Adhesives - Determination of the time to rupture of bonded joints under static load (ISO 15109:1998 modified)Adhésifs - Détermination du temps jusqu'a la rupture de joints collés soumis a une charge statique (ISO 15109:1998 modifiée)Klebstoffe - Bestimmung der Zeit bis zum Bruch geklebter Fügeverbindungen unter statischer Belastung (ISO 15109:1998 modifiziert)Ta slovenski standard je istoveten z:EN 15336:2007SIST EN 15336:2007en,fr,de83.180LepilaAdhesivesICS:SLOVENSKI
STANDARDSIST EN 15336:200701-september-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15336February 2007ICS 83.180 English VersionAdhesives - Determination of the time to rupture of bonded jointsunder static load ( ISO 15109:1998 modified)Adhésifs - Détermination du temps jusqu'à la rupture dejoints collés soumis à une charge statique (ISO 15109:1998modifiée)Klebstoffe - Bestimmung der Zeit bis zum Bruch geklebterFügeverbindungen unter statischer Belastung (ISO15109:1998 modifiziert)This European Standard was approved by CEN on 29 December 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15336:2007: E
...