Pull-off test for adhesion of a paint coating

Presentation for participants

 
Reference of the ILC: AP20PC
   
References of test methods: ISO 4624                    
   
Frequency: Each year
   
Time schedule:  
Opening date of registrations Registration deadline Date of shipment of samples Start of the tests Deadline for carrying out the tests and providing the results Date of delivery of reports
15/11/2019 15/03/2020 20/05/2020 01/06/2020 15/07/2020 15/10/2020
Note: After the deadline, registrations are only accepted within the limit of availability of samples
   
Main characteristics: σ (Breaking strength)
   
Other characteristics: Nature of failure (ratio of cohesive/adhesive failure with respect to the coating rank)
  Caution: The number of determinations may be low for the secundary characteristics, what may make inefficient the comparison between laboratories
   
   
Determination of the assigned values (“true values” for each characteristic): By statistical computation of the totality of the results with possible selection on competence criteria (accreditation, validation by a reference body, quantity of tests performed in the year), test to detect possible collusion, merging of results not obtained in reproductibility conditions, suppression of technically unvalid results.
   
Type of statistical computation: For numerical results, the statistical computation will provide an assigned value with its attached uncertainty, values of standard deviations for repeatability and reproductibility, limits of alerts for bias and repeatability of the participant, indiviual values for uncertainty of results of participants.
Number of products submitted to tests: 2 (2 different adherence levels)
Number of samples per participation: 6
Max number of operators per participation: 1 (it is necessary to order as many participations as there are participating test operators)
Product submitted to tests: Paint coating (on steel)
Type of samples: Plates
Approximate dimensions of samples: 200x100x5 mm
Specific preparation to be performed by the participant:  None (other than possible necessity to adapt dimensions of the test specimen to the equipment of the participant) (2 test pieces per supplied sample)