Seats Testing/Validation Concepting

Ownership

Research

Car Requirements

Safety Criteria:

• Adhere to all the safety specifications as listed by ASC

• Accommodate a five point safety harness

• integration of head, shoulder and side containment features into the seat

  • prevent lateral movement of the body

  • must ensure this does not interfere with egress and peripheral vision of the driver

    • not obstructing as much peripheral vision

• seat belt pass through should be right at the shoulder height of the driver

Line of Sight

• height adjust seems it will be risky

• Sliding seat (lateral movement)

• Tilting seat

  • might be risky like height adjustable one

  • seems more viable

Comfort

• support the human body and spine

• also conduct preliminary research into padding

  • Sheila will look into more of this

  • though you should still research to understand which materials will fit into the final design

• research into how seats are kept ventilated

Ideas i had/ things i thought about

• Depending on how we decide to hold things in place (ex glue) will have to test out if it is strong enough

• Testing the seatbelts to make sure they are functional

• Testing the materials chosen for the seat if it is comfortable, breathable etc

• Testing the vision requirements, must be able to see 700m from the ground when the chair is in standard position, certain angles etc

• Test and validate for ballast bag to make sure it doesn’t go flying (make sure it’s properly secured)

• Broken down into 2 Analysis - crash and safety and durability (what car companies use)

• Sled test is performed to test the the sled test performance include: strength of the seat anchorage and the adjustment, as well as the locking and displacement systems

• Height and weight for different ages https://www.engineeringtoolbox.com/body-weight-versus-height-d_1551.html

How other cars are tested

Crash and Safety :

• Seat Back Strength

• Seat Anchorage Dynamic Strength test

• Seat Structural Dynamic Test forward

• Strength of Seat Back Anchorage

• Luggage Retention / Partitioning Test 

• Head Restraint Energy Dissipation Test 

• Head Restraint Performance & Strength Test

• Seat-back Load Floor Test for Retention

Durability

• Head Restraint Lateral & Longitudinal Stability

• Vertical Load Strength of Cushion Frame 

• Seat Ornamentation & Knob Pull-off Strength 

• Actuator Strength in the Direction of Operation

• Seat-back Map Pocket Static Strength Requirements

• Seat-back Torsion Strength

• Jounce Test (Cushion & Back)

• Armrest Strength & Operating Effort

• Latch Catch Spring Test

• Jump Seat Strength

• Fatigue Resistance (seat structural fatigue durability test)

• Vibration Test for Resonance Point Detection

• Thermal Cycle Ageing Test or Creep Test 

3M Dual lock recosable fastener for seat

https://www.3m.com/3M/en_US/company-us/all-3m-products/~/3M-Dual-Lock-Reclosable-Fastener-SJ3541/?N=5002385+3293242271&rt=rud

Data sheet/ Typical Performance https://multimedia.3m.com/mws/media/1591570O/3m-dual-lock-reclosable-fastener-sj3542.pdf

Model SJ3541

• Black, interlocking mushroom-shaped heads (400 stem density per square inch) provide strong, reliable and durable fastening that can be opened and closed multiple times

• Mates with Type 170 and Type 250 stem densities to provide different strength combinations

• Synthetic rubber-based adhesive bonds well to a variety of substrates including low surface energy plastics such as polyethylene and polypropylene

• Strong fastener secures with an audible snap, verifying closure

• An alternative to screws and bolts, this hidden fastener provides a snug fit and smooth aesthetic appearance

• Features good temperature resistance of 120°F (49°C)

• Best suited for indoor use

3M™ Dual Lock™ Reclosable Fastener SJ3541 is the easy and clear alternative to traditional fastening methods, such as screws, nuts or bolts. It is designed to deliver a durable, reclosable fastening solution (which can be opened and closed multiple times) which bonds to a variety of substrates including many plastics and low surface energy materials.

Specifications