Adhesive Testing Results

Adhesive test results are based on material testing procedures outlined here:
Material Testing for Adhesives

Load rate used for Universal Testing Machine (UTM) was 0.5 mm/min.

Summary / Conclusions

Adhesive testing has found that surface preparation techniques have a profound effect on the adhesive’s strength. Degreasing provides a 46.55% stronger bond than using no surface preparation technique. Abrasion provides a 64.78% stronger bond than using no surface preparation technique.

Adhesive testing has also found that thorough and proper preparation of adhesive joints greatly influences whether it will result in utter failure or a superior bond.

Visual examination found that specimens with an excess amount of adhesives applied to it corresponded with specimens with better performance.

Raw Data

Refer to the file “Adhesive Testing Data.xls” for the raw data outputted from the Universal Testing Machine

Processed Data

Refer to the file “EA E120 HP-EN.pdf” for the adhesive’s technical data sheet.

Table #1: Max shear stress of each test specimen

Table #2: Average max shear stress of each surface preparation technique

Table #3: Modified average max shear stress of each surface preparation technique excluding anomalies

Table #4: Percentage difference of surface preparation techniques compared to none based on Table #3 calculations

Graphs of Single Lap Shear Test:

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