SealStrength


Seal Strength dataset presented in Li and Doganaksoy (2014).


Accelerated destructive degradation tests (ADDT) are often used to collect necessary data for assessing the long-term properties of polymeric materials. Based on the collected data, a thermal index (TI) is estimated. The TI can be useful for material rating and comparison. This package performs the least squares (LS) and maximum likelihood (ML) procedures for estimating TI for polymeric materials. The LS approach is a two-step approach that is currently used in industrial standards, while the ML procedure is widely used in the statistical literature. The ML approach allows one to do statistical inference such as quantifying uncertainties in estimation, hypothesis testing, and predictions. Two publicly available datasets are provided to allow users to experiment and practice with the functions.

Yili Hong

ADDT

A Package for Analysis of Accelerated Destructive Degradation
Test Data

SealStrength function

A data frame with 210 observations on the following 3 variables.
  <dl>
    <dt><code>TempC</code></dt><dd>Temperature.</dd> <dt><code>TimeH</code></dt><dd>Time in hours.</dd> <dt><code>Response</code></dt><dd>Strength (Newtons)</dd> </dl> 

Format

Li, M. and N. Doganaksoy (2014). Batch variability in accelerated-degradation testing. <em>Journal of Quality Technology 46(2)</em>, 171--180.

SealStrength: Data for Seal Strength

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