Aerospace series - Non-metallic materials - Foaming structural adhesives - Test methods - Part 2: Compressive tube shear

This European Standard defines the test method for determining the bond strength of structural foaming adhesive films or pastes by means of the tube test method.
This test method is suitable for determining bond strength in relation to the density after curing of the adhesive foam by means of compressive tube shear specimens.
It preferably applies to high expansion ratios, i.e.  50 % measured according to the method EN 2667-3.

Luft- und Raumfahrt - Nichtmetallische Werkstoffe - Strukturelle Expansionsklebstoffe - Prüfverfahren - Teil 2: Abscherung von Rohren unter Druck

Diese Europäische Norm legt das Prüfverfahren zur Bestimmung der Klebfestigkeit von strukturellen Expansionsklebstoffen in Film  oder Pastenform mithilfe des Rohrprüfverfahrens fest.
Dieses Prüfverfahren ist zur Bestimmung der Klebfestigkeit in Bezug auf die Dichte nach dem Aushärten des Strukturklebstoffs mithilfe von druckscherbeanspruchten Rohrprobekörpern geeignet.
Es gilt vorzugsweise für hohe Expansionsgrade, d. h. > 50 %, bestimmt nach dem Verfahren in EN 2667-3.

Série aérospatiale - Matériaux non-métalliques - Adhésifs structuraux expansibles - Méthodes d’essai - Partie 2 : Cisaillement sur tube en compression

Aeronavtika - Nekovinski materiali - Penjenje konstrukcijskih lepil - Preskusne metode - 2. del: Tlačna strižna cev

General Information

Status
Published
Publication Date
16-Jan-2018
Withdrawal Date
30-Jul-2018
ICS
49.025.50 - Adhesives
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 4/S 8 - Thermoplastics
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
17-Jan-2018
Completion Date
17-Jan-2018
Ref Project
SIST EN 2667-2:2018 - Aerospace series - Non-metallic materials - Foaming structural adhesives - Test methods - Part 2: Compressive tube shear

Overview

EN 2667-2:2018 - Aerospace series - Non‑metallic materials - Foaming structural adhesives - Test methods - Part 2: Compressive tube shear defines a standardized tube test method to determine the bond strength of structural foaming adhesive films or pastes. The method correlates bond strength with cured foam density using compressive tube shear specimens and is intended primarily for high expansion ratio foams (preferably > 50% expansion measured per EN 2667-3).

Key topics and technical requirements

  • Scope: Bond strength of foaming structural adhesives (films or pastes) using the tube shear test.
  • Test specimen geometry and materials: Concentric aluminium tubes (e.g., alloy 2024‑T351 or 5052‑0) prepared and bonded per the standard; tube dimensions and centering fixtures are specified.
  • Surface preparation: Aluminium surface treatment in accordance with EN 2334 before bonding.
  • Application and curing: Adhesive/primer application, curing cycle, and heat‑up rates follow the adhesive manufacturer's instructions and material standard; specified heat‑up rate range is 1 °C/min to 6 °C/min (monitored with a thermocouple in the adhesive).
  • Conditioning: Final test tubes conditioned at (23 ± 2) °C and (50 ± 5) % RH for at least 16 hours after curing.
  • Test machine and loading: Testing machine must meet ISO 7500‑1 calibration requirements; load applied at a constant rate of 2 000 N/min to 5 000 N/min until failure.
  • Specimen quantity and cutting: Minimum five specimens per test; cutting recommendations (band saw, perpendicular cuts, discard ends) are provided to minimize damage.
  • Data and calculation: Shear strength τ is calculated from maximum load, tube diameter and specimen height. Foam density is computed from measured masses and tube dimensions to 0.01 g/cm3 precision.
  • Test report: Comprehensive reporting requirements (adhesive ID, batch, surface prep, curing record, specimen dimensions, failure modes - cohesive vs adhesive, average strengths, deviations).

Applications and users

Who uses EN 2667-2:2018:

  • Aerospace material engineers and designers validating structural foaming adhesives
  • Adhesive manufacturers performing product qualification and batch verification
  • Independent test laboratories and certification bodies
  • OEMs and suppliers assessing adhesive process control and quality assurance

Practical uses:

  • Correlating cured foam density with bond strength for design or procurement limits
  • Comparing foam adhesive formulations or primers
  • Process validation for curing cycles and application methods
  • Failure mode analysis (cohesive vs adhesive) to improve joint performance

Related standards

  • EN 2667-3 (expansion ratio and volatile content for foaming adhesives)
  • EN 2334 (chromic‑sulphuric acid pickle of aluminium)
  • EN 2388 (aluminium alloy 2024‑T351 tubes)
  • ISO 7500‑1 (calibration of testing machines)

Keywords: EN 2667-2:2018, foaming structural adhesives, compressive tube shear, tube test method, bond strength, foam density, aerospace testing.

Frequently Asked Questions

EN 2667-2:2018 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Non-metallic materials - Foaming structural adhesives - Test methods - Part 2: Compressive tube shear". This standard covers: This European Standard defines the test method for determining the bond strength of structural foaming adhesive films or pastes by means of the tube test method. This test method is suitable for determining bond strength in relation to the density after curing of the adhesive foam by means of compressive tube shear specimens. It preferably applies to high expansion ratios, i.e.  50 % measured according to the method EN 2667-3.

This European Standard defines the test method for determining the bond strength of structural foaming adhesive films or pastes by means of the tube test method. This test method is suitable for determining bond strength in relation to the density after curing of the adhesive foam by means of compressive tube shear specimens. It preferably applies to high expansion ratios, i.e.  50 % measured according to the method EN 2667-3.

EN 2667-2:2018 is classified under the following ICS (International Classification for Standards) categories: 49.025.50 - Adhesives. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase EN 2667-2:2018 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Nichtmetallische Werkstoffe - Strukturelle Expansionsklebstoffe - Prüfverfahren - Teil 2: Abscherung von Rohren unter DruckSérie aérospatiale - Matériaux non-métalliques - Adhésifs structuraux expansibles - Méthodes d’essai - Partie 2 : Cisaillement sur tube en compressionAerospace series - Non-metallic materials - Foaming structural adhesives - Test methods - Part 2: Compressive tube shear49.025.50LepilaAdhesivesICS:Ta slovenski standard je istoveten z:EN 2667-2:2018SIST EN 2667-2:2018en,fr,de01-marec-2018SIST EN 2667-2:2018SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2667-2
January
t r s z ICS
v {ä r t wä w r English Version
Aerospace series æ Nonæmetallic materials æ Foaming structural adhesives æ Test methods æ Part
tã Compressive tube shear Série aérospatiale æ Matériaux nonæmétalliques æ Adhésifs structuraux expansibles æ Méthodes d 5essai æ Partie
t ã Cisaillement sur tube en compression
Luftæ und Raumfahrt æ Nichtmetallische Werkstoffe æ Strukturelle Expansionsklebstoffe æ Prüfverfahren æ Teil
tã Abscherung von Rohren unter Druck This European Standard was approved by CEN on
s v May
t r s yä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
t x x yæ tã t r s z ESIST EN 2667-2:2018

Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Apparatus and auxiliary equipment . 4 4 Test tubes, test specimens . 5 5 Procedure . 6 6 Expression of results. 7 7 Designation . 8 8 Test report . 8
EN 2334, Aerospace series — Chromic-sulphuric acid pickle of aluminium and aluminium alloys
EN 2388, Aluminium alloy 2024-T351 — Tubes for structures 0,6 mm ≤ a ≤ 12,5 mm — Aerospace series 1) EN 2667-3, Aerospace series — Non-metallic materials — Foaming structural adhesives films — Test methods — Part 3: Expansion ratio and volatile content 2) ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1: Tension/compression testing machines — Calibration and verification of the force-measuring system 3 Apparatus and auxiliary equipment 3.1 Tensile testing machine The test machine shall be approved to ISO 7500-1 and so designed that the breaking load lies between 10 % and 90 % of the selected full-scale capacity. The loads shall be recorded to an accuracy of 1 %. 3.2 Auxiliary equipment  air circulating oven with an accuracy of ± 5 °C;  balance with an accuracy to the nearest 0,01 g;  band saw;  thermoelectric couple;  mounting device per Figure 1.
1) Published as ASD-STAN Standard at the date of publication of this standard by AeroSpace and Defence industries Association of Europe - Standardization (ASD-STAN) (www.asd-stan.org) 2) Published as ASD-STAN Prestandard at the date of publication of this standar
...

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기사 제목: EN 2667-2:2018 - 항공우주 시리즈 - 비금속 재료 - 발포 구조용 접착제 - 시험 방법 - 제2부: 압축 튜브 전단 기사 내용: 이 유럽 표준은 튜브 시험 방법을 통해 구조용 발포 접착제 필름 또는 페이스트의 접합강도를 결정하기 위한 시험 방법을 정의한다. 이 시험 방법은 압축 튜브 전단 시편을 통해 경화 후 접착제 폼의 밀도와 관련된 접합강도를 결정하는 데 적합하다. 특히, EN 2667-3 방법에 따라 측정되는 높은 팽창률(50% 이상)에 적용하기를 선호한다.

記事タイトル：EN 2667-2：2018-航空宇宙シリーズ-非金属材料-発泡構造接着剤-試験方法-第2部：圧縮チューブせん断 記事内容：この欧州標準は、チューブ試験法による構造用発泡接着剤フィルムまたはペーストの接着強度を測定するための試験方法を定義しています。 この試験方法は、圧縮チューブせん断試験片を使用して、硬化した接着剤のフォームの密度に関連する接着強度を測定するのに適しています。 この標準では、高い膨張比（EN 2667-3の方法による測定において50％以上）を使用することを推奨しています。

The article is about EN 2667-2:2018, which is a standard for testing the bond strength of foaming structural adhesives in the aerospace industry. The test method involves using tubes to determine the bond strength of adhesive films or pastes. This method is particularly useful for determining bond strength in relation to the density of the cured adhesive foam. The standard recommends using high expansion ratios for accurate testing.