Testing Class Outline
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on-line self-paced class, complete with full
narration, and involving graphics. The course includes a thick manual, a CD
ROM with the soundtrack, questions along the way, and a certificate when your
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Test methods and practices used with servo-hydraulic
testing in ground vehicle product development; includes test design, setup and
and high level technicians involved with using servohydraulic test equipment in
the ground vehicle industry, who are new to the lab, or who would like to get a
better grounding in servo-hydraulic testing technology.
Why Do We Test?
The processes used for ground vehicle product
development, and the decision paths that are followed to choose the most
How the test-lab can support virtual modeling with the
right information at the right time. A comprehensive look at the current methods
of component characterization
What the various failure modes are, and how we reproduce
them. Fatigue theory provides grounding for the concepts to be discussed later.
Anatomy Of A Servo Hydraulic System
Principles of operation of each component in a
Servohydraulic test system, different types, attributes, and how they are sized.
Rig Design Techniques
The pitfalls of test rig design. How to meet the
competing needs of linear, high stiffness, low moving mass systems through the
use of materials, bearings, bolted connections, weldments, castings and so on.
The design of bell-cranks, seismic masses, and environmental chambers is also
Durability Test Systems
The various components and systems used for durability
testing, from bedplates to engine simulation to complete 25-channel road
simulation. The methods used, test design considerations, and how the tests are
integrated into product development.
Anatomy Of A Control System
control design and principles of operation, along with the various loop
stabilization techniques. Three-mode control for the accurate control of
acceleration, velocity and displacement. Calculated variable (matrix) control
for simplifying multi-channel systems. All the various optimization methods in
use today, including Adaptive Control and the principles behind its operation.
Programming Techniques And Applications
Function generation, block programming, histogramming,
peak-valley slicing, random vibration control and time history simulation
techniques and their applications in different types of testing. Squeak and
Rattle, Ride Comfort and Highly Accelerated Life Testing are also covered.
Basic Vibration Theory
Some basic mathematics and a solid intuitive feel for
dynamic systems, Fourier transforms and Autosepctra provide grounding for the
concepts to be discussed next. If the student blanks out during the math all is
not lost, its designed to be optional (and minimal).
How transducers are selected, how the data is collected,
and how the data is analyzed and prepared for simulation. Measuring, analyzing
and inverting the Frequency Response Function. Non-linearities, singularities
and the iteration process. New methods of iteration are also covered, including
Singular Value Decomposition and FRF iteration.
Running the Test
Generic road profiles and test monitoring techniques.
Finally, test reporting and data archival.