I share a summary of the adhesion test method used on shrink sleeves.
The proyect was an aqueduct with 48-inch nominal diameter with 3LPE external coating and heat shrink sleeves in the welded joints.
For this evaluation we use ASTM D3330, method F: single layer tapes, peeled at 90 °.
Procedure:
· Cut a rectangle 25 cm wide by 12 cm long with a knife
· For 60 seconds we apply a constant force of at least 7.8?????? / ???? at 90 ° peel.
· Evaluate the failure mechanism
Cohesive failure
Adhesive failure
I share it hoping it will be of interest to you
AMPP Coating Inspector Level 2
3 个月A qué velocidad realizaste el ensayo
Materials and Corrosion Engineer
1 年Please can you provide the list of equipment/instruments used to carry out the peel test. Most especially the metal used to clip the strip of coating (peeled coating)
Assistant Manager Cathodic Protection Services at Bureau Veritas Group
3 年7.5 or 78 Kgf/in What is f in the unit
Assistant Manager Cathodic Protection Services at Bureau Veritas Group
3 年Minimum how much force should have for peel test