Middelen

Title:

Air Blast and the Science of Dynamic Pressure Measurements

INTRODUCTION TO AIR BLAST MEASUREMENTS: An explosion in air is a process by which a rapid release of energy generates a pressure wave of finite amplitude. The energy source can be anything that generates a violent reaction when initiated. This includes: chemical or nuclear materials, gases (high pressure gasstorage vessels, steam boilers), or electricity (spark gap, rapid vaporization of a metal). The properties of air will cause the front of this pressure wave to "shock up", or steepen, as th

Title:

Driving Long Cables

Title:

Dynamic Pressure Calibration

Background: In the late 1950’s and 1960’s, with the advent of the aerospace era and advanced weapons development, came the requirement for high-frequency pressure sensors to make shock wave, blast, rocket combustion instability, and ballistic measurements. Piezoelectric sensors at that time had limited frequency response, and were mainly used for acoustic and engine combustion applications.

Title:

Introduction to Air Blast Measurements - Part II: Interfacing the Transducer

Title:

Introduction to Air Blast Measurements - Part IV: Getting the Signal Down the Cable

Title:

Introduction to Air Blast Measurements - Part V: Alternate Technologies?

Title:

Introduction to Air Blast Measurements Part III: Guaranteeing that Validated Pressure Measurements are Acquired

Title:

Measuring Static Overpressures in Air Blast Environments

Title:

Pyroshock Explained

Title:

Shock and Blast Measurement - Rise Time Capability of Measurement Systems?

Shock and blast loading of structures is characterized by a very rapid deposition of energy. When acquiring acceleration or pressure measurements from transducers mounted on test structures, it is often desired to quantify the rate (rise time) of this loading, the relative timing between loading and/or structural response events, or both. Regardless of which, it is important that we select transducers with adequate rise times to acquire these m

Title:

Testing the Gemini 8m Telescopes using PCB Accelerometers