1
C H A P T E R 1
Overview of the Integrated
Test Analysis Process (ITAP)
1.1 INTRODUCTION
Over the past 60 years, the U.S. aerospace community has developed, refined, and standard-
ized an integrated approach to structural dynamic model verification and validation. One name
for this overall approach is the Integrated Test Analysis Process (ITAP) for structural dynamic
systems, which is summarized in Figure 1.1.
System Dynamic Model
Modal Test Plan
Test-Analysis
Correlation
Experimental Modal
Analysis
Measured Data
Analysis
Measured Data
Acquisition
Model Updating
(Reconciliation)
Figure 1.1: Overview of the integrated test analysis process.
e yellow-colored steps are associated with analytical-centric disciplines, while the aqua-
colored steps are associated with laboratory-centric disciplines. e mixed-colored steps involve
a blend of analytical and laboratory disciplines. Each step in the process is the product of a variety
of authoritative, widely recognized sources. is book is intended to serve readers who have some
familiarity with the foundations of structural dynamics and modal testing. A comprehensive
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