## What is a half sine pulse?

The half-sine pulse has a smooth transition; all the change is uniform. The half-sine generates low amplitude, high-frequency energy. Much of the wavelength energy is at lower frequencies and is primarily used to test for responses and resonances in mechanical systems.

What is the storage time in output waveform of a pulse input?

Storage time (ts) − The time interval between the trailing edge of the input pulse to the 90% of the maximum value of the output, is called as the Storage time.

### What is G in shock test?

The unit g (or g) represents multiples of the acceleration of gravity and is conventionally used. A shock pulse can be characterised by its peak acceleration, the duration, and the shape of the shock pulse (half sine, triangular, trapezoidal, etc.).

What is a trapezoidal shock impulse?

A Trapezoid Shock impulse is also called a Rectangular or Square Shock. A trapezoid shock has the shape of a rectangle or square. A typical trapezoid shock performed by DES is shown in Figure 5. The trapezoid shock in Figure 5 is approximately 50 G peak acceleration with a duration of 10 milliseconds.

#### What is wave shaping circuit?

Electronic circuits used to create or modify specified time-varying electrical voltage or current waveforms using combinations of active electronic devices, such as transistors or analog or digital integrated circuits, and resistors, capacitors, and inductors.

When a pulse is transmitted through a low pass circuit Its shape is preserved if the 3 dB frequency is?

A pulse shape will be preserved if the 3-dB frequency is approximately equal to the reciprocal of the pulse width. of the order of 4 MHz. be treated as a series of positive and negative steps. The shape of the output waveform for a square wave input depends on the time constant of the circuit.

## What is 50g impact?

4 November 2003. “The NHTSA standard for a sudden impact acceleration on a human that would cause severe injury or death is 75 g’s for a “50th percentile male”, 65 g’s for a “50th percentile female”, and 50 g’s for a “50th percentile child”.

What is the difference between shock and vibration?

Random vibration, often induced in HALT chambers, excites all frequencies simultaneously. Both sinusoidal and random vibration occur in your product’s environment. Shock is an impulse applied to a system. It is a sudden acceleration.

### What are the assumptions made for pulse mode circuit?

The first requirement is that the pulses should be long enough so that the circuit can respond to them. The second requirement is that the pulses should not be too long so that they are still present after the new secondary state is reached.

How is shock absorption measured?

By the use of an accelerometer and displacement transducer, a value for the peak deceleration (‘g’ factor) for the falling mass is determined. A low ‘g’ value indicates good shock absorption characteristics. The test also assesses the energy return on rebound.

#### Why do we need wave shaping?

The wave shaping is used to perform any one of the following functions. To hold the waveform to a particular d.c. level. To limit the voltage level of the waveform of some presenting value and suppressing all other voltage levels in excess of the present level.

How is wave shaping done?

Linear elements such as resistors, capacitors and inductors are employed to shape a signal in this linear wave shaping. A Sine wave input has a sine wave output and hence the nonsinusoidal inputs are more prominently used to understand the linear wave shaping.

## How do you determine the cutoff frequency for a low pass filter?

The cutoff frequency for a low-pass filter is that frequency at which the output (load) voltage equals 70.7% of the input (source) voltage. Above the cutoff frequency, the output voltage is lower than 70.7% of the input, and vice versa.

Do F1 drivers wear g-suits?

Braking and acceleration aren’t the only sources of extreme forces in F1 cars; cornering can sometimes put drivers through nearly 8 Gs of lateral acceleration. Fighter pilots endure similar forces, but those are usually vertical Gs, where G-suits can prevent the loss of blood flow to their brains.