GB/T 16997-1997Adhesives - Designation of main failure patterns (English PDF)

GB/T 16997-1997 is the English-translated version of 胶粘剂 主要破坏类型的表示法.

GB/T 16997-1997 is the Chinese national standard that names the ways a bonded joint fails: adhesive failure at the interface, cohesive failure within the adhesive layer, failure of the substrate itself, and the mixed patterns between them. A strength figure alone does not say whether a joint is sound: a high result with adhesive failure means the surface preparation is wrong, while substrate failure means the bond is stronger than the material. Naming the failure pattern in a standard way lets test reports from different laboratories be compared and lets a supplier and a customer discuss a result at all. The standard gives the designations and their symbols for the main failure patterns observed on bonded specimens, for use in the test reports of adhesive test methods. It is superseded by GB/T 16997-2025; this edition remains the reference for test reports drawn up under it. Issued on 26 September 1997, it applied from 1 April 1998.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 5 pages — is available in the English PDF.

GB 19340-2014|GB/T 33320-2016|HG/T 4223-2011

1. 1

   Add to cart

   Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.

2. 2

   Checkout

   Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).

3. 3

   Instant delivery (0–9 sec)

   Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.

4. 4

   Invoice included

   A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.