Page 45 - Fundamental of Engineering Design

Human sensory capabilities

1. Sight : Human eyes see differently from different

angles or position. Limit of color vision

2. Noise : noise contribute to feelings such as dB effect

irritability, boredom, and well being. 90 harmless

Above unsafe
100
3. Touch: touch adds or may even replace the 130 Unpleasant +
information transmitted to brain by eyes and ears. harmful

4. Vibration and motion: guidelines

i. Eliminate vibration (>0.08mm amplitude)

ii. Used shock absorbers (spring)

iii. Damping material/ cushioned seats

iv. Reduce vertical vibration

v. Avoid any seating that transmit vibration 3-4 45
cycles per second