User:Andrew K Farag/Notebook/CHEM-582/2015/04/03: Difference between revisions
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===Adhesive strength test on epoxy samples=== | |||
* Placed weight at a distance of 9.5 cm from adhesion site | |||
In the previous lab session weights were placed at different distances from adhesion site for weights if 1-10 lb. The nail only dislodges at the furthest site (i.e. 9.5 cm away from adhesion site). Nail one broke after applying 8lb. | |||
*Nail 2: Applied 1,2,3...,9 lb for 2 min each | |||
**The adhesive broke after 4.85 s with weight of 10 lb. | |||
*τ=rsinθ | |||
*τ=(0.095 m)(4.535 kg)(9.8 N/kg)= | |||
* Nail 3: 1,2,3,4,5,6 lb each for 2 min | |||
** The adhesive broke after 2.5 s at 7 lb. | |||
* Nail 4: 1,2,3,4,5 lb each applied for 2 min | |||
** The adhesive broke after 18 s at 6 lb. | |||
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Revision as of 10:17, 10 April 2015
 Project name
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Objectives
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Adhesive strength test on epoxy samples
- Placed weight at a distance of 9.5 cm from adhesion site
In the previous lab session weights were placed at different distances from adhesion site for weights if 1-10 lb. The nail only dislodges at the furthest site (i.e. 9.5 cm away from adhesion site). Nail one broke after applying 8lb.
- Nail 2: Applied 1,2,3...,9 lb for 2 min each
- The adhesive broke after 4.85 s with weight of 10 lb.
- τ=rsinθ
- τ=(0.095 m)(4.535 kg)(9.8 N/kg)=
- Nail 3: 1,2,3,4,5,6 lb each for 2 min
- The adhesive broke after 2.5 s at 7 lb.
- Nail 4: 1,2,3,4,5 lb each applied for 2 min
- The adhesive broke after 18 s at 6 lb.
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