1. Connie King 3.064 12/14/05 Side-Release Buckle

2. Materials Selection Economical Fatigue resistance Temperature & weather resistance MaterialPPHDPENylon 6POM Flexural Modulus (GPa) 1.51.12.32.5 Flexural Strength (MPa) 402085 T m (°C)165130220170 T g (°C)-20 50-30 Water Absorption0%0.08%3.10%0.46% Relative Price11 2.5 http://www.matweb.com/index.asp?ckck=1; McCrum, N.G. et al. Principles of Polymer Engineering (2003).

3. Stress Analysis P = 24 N σ F = 40 MPa E = 1.5 GPa a = 0.015 m b = 0.008 m h = 0.003 m http://www.efunda.com/formulae/formula_index.cfm

4. Stress Analysis

5. Processing – Injection Molding Melt temp ~ 200ºC Mold temp ~ 30ºC 2 gates