Reliability Reliability of Adhesives used in High Quality Audio Components

Background Adhesives used to bond two metallic components together. Adhesive is Key Process Input (KPI) for the construction of speakers. Storage conditions (temperature and humidity) are KPI’s to reliability of adhesive.

Background Two Conditions: –Factor 1: Length of Storage Bond strength was measured for adhesives stored for 3 days to 82 days. –Factor 2: Storage Temperature and Humidity Bond strength measured for adhesives stored at 4 conditions: Relative Humidity

Analysis Steps of Analysis –Excel –Minitab –Maple –Monte Carlo Analysis

Excel Analysis of Storage Conditions

Storage Time Analysis Table of MTTF Standard 95% Normal CI Distribution Mean Error Lower Upper Weibull

Storage Conditions Capability

Storage Conditions Minitab Analysis Distribution ID Plot: Test 1 Goodness-of-Fit Anderson-Darling Correlation Distribution (adj) Coefficient Weibull Table of MTTF Standard 95% Normal CI Distribution Mean Error Lower Upper Weibull Distribution ID Plot: Test 2 Goodness-of-Fit Anderson-Darling Correlation Distribution (adj) Coefficient Weibull Table of MTTF Standard 95% Normal CI Distribution Mean Error Lower Upper Weibull Distribution ID Plot: Test 3 Goodness-of-Fit Anderson-Darling Correlation Distribution (adj) Coefficient Weibull Table of MTTF Standard 95% Normal CI Distribution Mean Error Lower Upper Weibull Distribution ID Plot: Test 4 Goodness-of-Fit Anderson-Darling Correlation Distribution (adj) Coefficient Weibull Table of MTTF Standard 95% Normal CI Distribution Mean Error Lower Upper Weibull

Conclusions Storage Conditions showed significant differences in MTTF. Storage Time did not show significant differences in MTTF Further Weibull analysis in Maple required. Equations from Maple will be used to conduct Monte Carlo Analysis.