Testing Systems Makes The World A Much Safer Place

From sub-atomic particles all the way as much as skyscrapers, internal movements and motions resulting from the absorption of energy make all objects vibrate for some degree. This fact implies that in some sort of filled up with energy and movement, vibrations — or the oscillating responses of objects when moved from a position of rest — would be the norm.

Some vibrations are expected and even necessary for products to function as expected. As a great example, consider traditional speakers that turn energy into vibrations, which ultimately allows music lovers to hear their favorite singers and musicians. Another example may be the tightly stretched diaphragm included in the chest little bit of a stethoscope, which, when excited by sound waves, allows a physician to hear a patient’s heartbeat and/or breathing.

Needless to say, not absolutely all objects vibrate in a way that’s helpful as well as intended. For example, there probably isn’t a civil engineer alive who doesn’t know the story of the Tacoma Narrows Bridge and how 40-mile-per-hour winds induced its collapse because of structural vibration. When it comes to rest people, we know of the bridge’s final, fateful moments on November 7, 1940 because of the frequently viewed footage captured by camera store owner Barney Elliott. The film shows the bridge going into violent wavelike motion before breaking up and falling into Washington State’s Puget Sound below.

An even more recent exemplory case of unintended vibration may be the now famous June 10, 2000 opening day of London’s Millennium Footbridge. The combined synchronous movements of pedestrians caused what’s known as positive feedback mechanical shock testing — a swaying motion emanating from the natural human instinct to stay balanced while walking. The effect resulted in Londoners dubbing the structure the “Wobbly Bridge.”

Fortunately for manufacturers and consumers alike, the materials and products we depend on today in everything from airplane wings to suspension bridges are created stronger and more reliable thanks in large part to vibration testing.

From sub-atomic particles all the way as much as skyscrapers, internal movements and motions resulting from the absorption of energy make all objects vibrate for some degree. This fact implies that in some sort of filled up with energy and movement, vibrations — or the oscillating responses of objects when moved from a position of rest — would be the norm.

Some vibrations are expected and even necessary for products to function as expected. As a great example, consider traditional speakers that turn energy into vibrations, which ultimately allows music lovers to hear their favorite singers and musicians. Another example may be the tightly stretched diaphragm included in the chest little bit of a stethoscope, which, when excited by sound waves, allows a physician to hear a patient’s heartbeat and/or breathing.

Needless to say, not absolutely all objects vibrate in a way that’s helpful as well as intended. For example, there probably isn’t a civil engineer alive who doesn’t know the story of the Tacoma Narrows Bridge and how 40-mile-per-hour winds induced its collapse because of structural vibration. When it comes to rest people, we know of the bridge’s final, fateful moments on hardness testing because of the frequently viewed footage captured by camera store owner Barney Elliott. The film shows the bridge going into violent wavelike motion before breaking up and falling into Washington State’s Puget Sound below.

An even more recent exemplory case of unintended vibration may be the now famous June 10, 2000 opening day of London’s Millennium Footbridge. The combined synchronous movements of pedestrians caused what’s known as positive feedback — a swaying motion emanating from the natural human instinct to stay balanced while walking flexural testing. The effect resulted in Londoners dubbing the structure the “Wobbly Bridge.”

Fortunately for manufacturers and consumers alike, the materials and products we depend on today in everything from airplane wings to suspension bridges are created stronger and more reliable thanks in large part to vibration testing.

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