WHAT ISSHOCK?

A mechanical or physical shock (not the electrical kind) is a sudden acceleration or deceleration typically caused by the impact of one object with another. This type of shock causes physical

vibrations that travel through the object and can cause stress, strain or even damage to the object.SHOCK

SHOCK SENSITIVE SITUATIONS

DETERMINING G-FORCE

Transformer Shipping

Public Transportation Comfort

Transporting Medical Equipment

Vehicle Crash Testing

Aviation Shipment Monitoring

Package Performance Testing

Shipping Live Cargo

Moving Wind Turbines

Drop Testing

Air Force physician, John Stapp broke the record for highest g-force experienced by a human at

on what became his final run, in December 1954. Before his many years of g-force testing, it was thought that pilots could only withstand

46.2 G’s

4.1 g’sA slap on the back creates

1 g

2 g

3 g

4 g

Ground

Pronunciation: /SHäk A violent shaking movement caused by an impact, explosion, or tremor.

Noun Measurement:G-Force (Gravitational Force) is the unit of measurement to determine shock level.

Is a measurement of acceleration (not force).

G-Force

G-FORCE EXAMPLES

A sneeze creates

If a person jumps from a three foot drop off and lands stiff legged, they will feel about

100 G’smomentarily

2.9 g’s

• Certain objects can be damaged by a single shock.• Some objects could fail or fatigue with repeated low-level shocks, reducing the

reliability of a product.• A shock can cause an instrument or device to become out of adjustment,

requiring recalibration before use. • Some materials such as primary high explosives may detonate with mechanical

shock or impact.

MEASURING SHOCK

What’s the difference?

Which is right for me?

WAYS TO MEASURE SHOCK

Why is it importantto measure shock levels?

DIFFERENT• Shock Detector / Impact Monitor• Accelerometer• Data Logger

A Shock Detector/Impact Monitor detects and measures sudden or severe impacts.

An Accelerometer detects and measures the speed and direction of an object.

A Shock Data Logger is a data acquisition system or device which detects, measures and records shock levels and other environmental parameters.

A Shock Detector/Impact Monitor tells you whether or not an impact has occurred, but does not record any information.

An accelerometer is used in a lot of different applications, and senses the movement and direction of an object but does not record any information.

Shock Data Loggers have a built in accelerometer. Shock loggers mea-sure and record all shock data for evaluation. Some can also measure temperature, humidity and pressure levels that could be an important factor if an item is damaged.

Sources:• Allen, M., et al (1994). “Acceleration perturbations of daily living: A comparison to ‘whiplash’.” Spine, 19(11):1285-1290.• John R. Cameron, James G. Skofronick, and Roderick M. Grant. Madison. Physics of the Body. WS: Medical Physics Publishing, 1992• Tyson, Peter. “All About G Forces.” PBS. PBS, 01 Nov. 2007. Web. 04 Feb. 2015. <http://www.pbs.org/wgbh/nova/space/gravity-forces.html>.• “Shock: Definition of Shock in Oxford Dictionary (American English) (US).” Shock: Definition of Shock in Oxford Dictionary (American English) (US). Oxford Dictionaries, 2015. Web. 05 Feb. 2015. <http://www.oxforddictionaries.com/us/

definition/american_english/shock?q=Shock&searchDictCode=all>.• Texas Instruments. “Accelerometers and How They Work.” (2005): n. pag. Texas Instruments, 1 June 2005. Web. 9 Feb. 2015. <http://www2.usfirst.org/2005comp/Manuals/Acceler1.pdf>.• Formula 1. “Aerodynamics.” Formula 1®. Formula 1®, 6 Jan. 2003. Web. 09 Feb. 2015. <http://www.formula1.com/inside_f1/understanding_f1_racing/5281.html>.• “How G-force Affects F1 Drivers.” YouTube. Caterham F1 Team, 24 Oct. 2013. Web. 09 Feb. 2015. <https://www.youtube.com/watch?v=nr8Fjhymvis>.• Goodrich, Ryan. “Accelerometers: What They Are & How They Work.” LiveScience. TechMedia Network, 01 Oct. 2013. Web. 12 Feb. 2015. <http://www.livescience.com/40102-accelerometers.html>.

Reources:• freevector/Vecteezy.com (F1 Car Vector)

www.madgetech.com | Ph. (603) 456.2011 | Fax (603) 456.2012Created by the MadgeTech Marketing Team

MadgeTech Shock101-EB Data Logger

Shock Detector/Impact Monitor Accelerometer Data Logger

A Formula 1 racecar driver can experience up to

5 G’sof force when going around corners and breaking.

On planet earth, objects fall at an acceleration rate of 9.81 meters per second, squared – or “1 g”.

This universal formula is written as:

So, if an object is falling to the ground, the object would increase in speed at a rate of 9.81 m/s2 until it hit the ground. The distance from the ground, the force exerted and the mass of the object will determine the resulting

“g-force” up-on impact.

18 G’s

2 seconds

1 second

3 seconds

4 seconds

g = 9.81 m/s2