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Passice Vehicle And Traffic Safety > Restrain System Biomechanics > Flashcards

Restrain System Biomechanics Flashcards

1
Q

Explain Process of developing Restraints.

A
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2
Q

Explain the Circle of Life

A
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3
Q

What happens in a Frontal Crash with an Unrestrained Occupant?

A
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4
Q

Seat Belt Biomechanics – Fundamental Mechanical Concepts?

A

Seat Belt Biomechanics – Fundamental
Concepts
Restraint – Mechanical

  • Maximize the time which the restraint force is applied
  • Maximize the distance travelled over the ground by the occupant
  • Maximize the force below injourious level
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5
Q

Seat Belt Biomechanics – Fundamental Anatomical Concepts?

A

Restraint – Anatomical

  • Minimize local deformation and rate of deformation
  • Maximize the area of the restraining force
  • The magnitude of the restraining forces should not exceed the force tolerance of that region
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6
Q

What are the Fundamental Restraint Kinematics concerning seat belt.

A
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7
Q

Principle of Buckle Pretensioner?

A
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8
Q

What is a Pyrotube Retractor?

A
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9
Q

Comparison of Belt System With and Without Pretensioner.

A
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10
Q

Explain Shoulder Belt Force Limitor.

A
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11
Q

What is the Effect of Belt Force Limitation?

A
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12
Q

Adaptive Force Limiting?

A
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13
Q

What is the Effect of Early Coupling?

A
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14
Q

Ideal coupling?

A
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15
Q

Effect of Pre-Pretensioning?

A
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16
Q

Effect of slack on initial time of crash - 1.5 s prebrake.

A
17
Q

Inflatable Belt – Contact Pressure on Chest?

A
18
Q

Explain the geometry for Inflatable Belts.

A
19
Q

Chest Deflections with different dummies and belts.

A
20
Q

Impact of different belt geometires on Chest Excursions?

A
21
Q

What is IARV?

A

Injury Assessment Value (IARV) is a human response level below which
a specified significant injury is unlikely to occur for a given individual

22
Q

Explain The Negative Chest Deflections recorded in these tests areassociated with one of two
potential phenomena concerning 4-Point Belt.

A

4-Point Belt
The Negative Chest Deflections recorded in these tests are
associated with one of two
potential phenomena:
1) a straightening of the spine with a concomitant
change in rib angle causing expansion of the
ribcage (ribs angled down have a smaller depth
than ribs that are horizontal)
2) the inertial effect of the organs impacting the ribs
during the test, as the shoulders and pelvis

23
Q

Explain Integrated Booster Cushion.

A
24
Q

Explain Inflatable Restraint Biomechanics

A
25
Q
A
26
Q

Explain the Inflatable Restraint Biomechanics
Head and Face Contact Mitigation

A
27
Q

Explain Inflatable Restraint Biomechanics
Load Sharing, Force Distribution, and Work

A
28
Q
A
29
Q
A

Passice Vehicle And Traffic Safety (9 decks)

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