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Tap Testing
Using
the CATT
Sample
Data
& Images
Data Analysis
Semi-Automated
Cart
Company
Information
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Advanced Structural
Imaging, Inc.
2014 North Dakota Avenue, Ames,
IA 50014
sales@asi-nde.com
Welcome to
Advanced Structural Imaging, Inc.
Makers of the Computer-Aided
Tap Tester (CATT)
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Tap
testing is a time-proven NDT practice that is fast, low cost and
effective for inspecting composite sandwhich structures for disbonds and core damage. However, inspections
based on the sound of a tap are subjective and do not provide
quantitative information. Until the deveopment of the Computer-Aided Tap Testing system, it was
difficult to document the extent of damages to a structure for
reports or for archiving. |
Tap Testing Using the
Computer-Aided Tap Testing (CATT) System
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 The
patented Computer-Aided Tap Testing system significantly improves
the tap testing method. Quantitative data relating to the surface
stiffness of the component is collected and the reliance on
the audio signal is completely eliminated. The impact duration
of an instrumented tapper is measured and fed into a computer to produce C-scan images revealing structural
features, damage and flaws within the component. Images can also
be produced to display the local stiffness (an effective spring
constant) of the structure and the percentage loss of stiffness
caused by damages. Data can be collected by manual tapping or with the use of
a semi-automated tapping cart. Using the cart, a large area
can be inspected very rapidly. The manual tap probe is used
to inspect small or confined areas and on surfaces with a significant
curvature. The system is easy to use and, thus, requires very little operator
training. The system significantly improves the quality of the
inspection by producing a visual image of the condition of the
structure. The data can be easily shared or archived for future
reference.The CATT system is in use by NASA, aircraft manufacturers,
composite manufacturing and repair facilities, university and
national laboratories, and other inspection laboratories. The
system was developed for use in the aerospace industry but it
is also finding utility by boat surveyors. The system is economically
priced and usually ships in 2 to 4 weeks. More information on
the CATT system can be found on the other pages of this Internet
site or in the product literature offered below. Please contact
ASI if you have any questions. |
Product Literature on the CATT System
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