Measurement Computing eZ-NDT version 6.0.9 - Manual (Page 5)

eZ-NDT 988390 Introduction 1-1
Introduction 1
System Requirements
Minimum requirements include:
•
Monitor: SVGA, 1024 x 768 screen resolution
• Requires 32-bit version of Windows: Windows 2000 SP4, Windows XP, or Windows Vista (x86)
Windows 2000 SP4 and Windows XP Users:
PC with Intel ™ Pentium 4 or equivalent; 1 GB memory; 10 GB disk space
Windows Vista (x86) users:
PC must be Windows Vista Premium Ready
Reference Note:
If necessary, refer to your system’s associated hardware
manual for information regarding the following:

Software Installation

System Requirements

Hardware Setup

Driver Installation
What is eZ-NDT?
eZ-NDT is a non-destructive QA/QC inspection system based on the ZonicBook FFT. High frequency
vibration data is collected and compared against user-defined amplitude and frequency limits. A passed
(good) part will have the maximum spectral peak(s) within the defined limit band(s). A failed (bad) part
will have one or more spectral peaks outside the defined limit band(s).
eZ-NDT systems typically include a computer running a Microsoft Windows 2000 SP4 or Windows XP,
an analyzer such as a ZonicBook FFT Analyzer, or an IOtech 640 or 650, one modal hammer, and one
response instrument, such as a microphone or an accelerometer.
Note: The term “ZonicBook” refers to a ZonicBook-Medallion and/or a ZonicBook/618E device unless
otherwise specified.
eZ-NDT has two modes: Investigation and Inspection.
The Investigation Mode is used to define the spectral acceptance regions. It is an iterative process that
compares the spectral frequency and amplitude differences between known Good and Bad parts.
Limit bands are defined based on vibration peaks that occur in the tests of “good” parts, but not in the tests
for “bad” parts. After the limits are defined all the parts are tested to ensure that:
• all the “good” parts pass and
• all the “bad” parts fail
Some fine-tuning may be required.
When test results are consistent, you are ready to start testing production parts in the Inspection Mode.
Typically, good parts should have a consistent spectral response, in other words, a good repeatable pattern.
A shift or change in spectral pattern indicates a change in the part’s Mass, Stiffness, or Damping. These
changes often indicate a problem with the part.

To ensure repeatable results make certain that setup conditions are consistent;
for example: the Impact Location and Force of hammer strike.

When an automated system is used, there are additional process considerations.
These are typically addressed and configured at the factory prior to shipment.