Random Vibe and Shock Testing Training

Random Vibe and Shock Testing Training

Introduction:

Random Vibe and Shock Testing Training Course Description

This three-day Random Vibe and Shock Testing Training is primarily designed for test personnel who conduct or supervise or “contract out” vibration and shock tests. It also benefits design, quality and reliability specialists who interface with vibration and shock test activities.

Random Vibe and Shock Testing TrainingRelated Courses:

Duration:3 days

Skills Gained:

• How to plan, conduct and evaluate vibration and shock tests and screens.
• How to attack vibration and noise problems.
• How to make vibration isolation, damping and absorbers work for vibration and noise control.
• How noise is generated and radiated, and how it can be reduced.

Customize It:

With onsite Training, courses can be scheduled on a date that is convenient for you, and because they can be scheduled at your location, you don’t incur travel costs and students won’t be away from home. Onsite classes can also be tailored to meet your needs. You might shorten a 5-day class into a 3-day class, or combine portions of several related courses into a single course, or have the instructor vary the emphasis of topics depending on your staff’s and site’s requirements.

Course Content:

Minimal math review of basics of vibration, commencing with uniaxial and orsional SDoF systems. Resonance. Vibration control.

Instrumentation — How to select and correctly use displacement, velocity and especially acceleration and force sensors and microphones. Minimizing mechanical and electrical errors. Sensor and system dynamic calibration.

Extension of SDoF to understanding of multi-resonant continuous systems encountered in land, sea, air and space vehicle structures and cargo, as well as in electronic products.

Types of shakers — Tradeoffs between mechanical, electrohydraulic (servohydraulic), electrodynamic (electromagnetic) and piezoelectric shakers and systems. Limitations. Diagnostics.

Sinusoidal one-frequency-at-a-time vibration testing — Interpreting sine test standards. Conducting tests.

Random Vibration Testing — Broad-spectrum all-frequencies-at-once vibration testing. Interpreting random vibration test standards. Conducting tests.

Simultaneous multi-axis testing gradually replacing practice of reorienting device under test (DUT) on single-axis shakers.

Environmental stress screening of electronics production. Extensions to highly accelerated stress screening (HASS) and to highly accelerated life testing (HALT).

Assisting designers to improve their designs by (a) substituting materials of greater damping or (b) adding damping or (c) avoiding “stacking” of resonances.

Understanding automotive buzz, squeak and rattle (BSR) — Assisting designers to solve BSR problems. Conducting BSR tests of materials and products.

Intense noise (acoustic) testing of launch vehicles and spacecraft.

Shock testing — Transportation testing. Pyroshock testing. Misuse of classical shock pulses on shock test machines and on shakers. More realistic oscillatory shock testing on shakers.

Shock response spectrum (SRS) for understanding effects of shock on hardware. Use of SRS in evaluating shock test methods, in specifying shock tests and in conducting shock tests.

Attaching DUT via vibration and shock test fixtures — Large DUTs may require head expanders and/or slip plates.

Modal testing — Assisting designers.

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Time Frame: 0-3 Months4-12 Months

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