{"id":129,"date":"2021-04-23T15:03:35","date_gmt":"2021-04-23T15:03:35","guid":{"rendered":"https:\/\/engprojects.tcnj.edu\/hpvc-21\/?page_id=129"},"modified":"2021-04-28T14:46:49","modified_gmt":"2021-04-28T14:46:49","slug":"testing","status":"publish","type":"page","link":"https:\/\/engprojects.tcnj.edu\/hpvc-21\/testing\/","title":{"rendered":"Testing"},"content":{"rendered":"\n

A. Frame<\/strong><\/p>\n\n\n\n

Test A1: Top Loading<\/p>\n\n\n\n

Date:<\/p>\n\n\n\n

Purpose: -Ensure safety of rider in event of complete flip over<\/p>\n\n\n\n

-2670 N (600 lbs) applied to rollhoop at 12\ud834\udda9 from vertical<\/p>\n\n\n\n

-Max (expected) deflection: 0.240\u201d < 2\u201d allowable deflection<\/p>\n\n\n\n

Procedure: -Strip frame of non-essential materials<\/p>\n\n\n\n

-Use wooden boards to brace frame, as well as tilt at 12 degree <\/p>\n\n\n\n

incline, and clamp<\/p>\n\n\n\n

-Load appropriate amount of weight onto chain and apply load <\/p>\n\n\n\n

to the roll hoop<\/p>\n\n\n\n

-Use dial test indicators to find deflection<\/p>\n\n\n\n

Test A2: Side Loading<\/p>\n\n\n\n

Date: <\/p>\n\n\n\n

Purpose: -Ensure safety of rider in event of vehicle tip over onto side<\/p>\n\n\n\n

-1330 N (300 lbs) applied to rollbar at shoulder height<\/p>\n\n\n\n

-Max (expected) deflection: 0.0013\u201d< 1.5\u201d allowable deflection<\/p>\n\n\n\n

Procedure: -Strip frame of non-essential materials and place on side<\/p>\n\n\n\n

-Use wooden boards to brace frame and clamp in place<\/p>\n\n\n\n

-Load appropriate amount of weight onto chain and apply load <\/p>\n\n\n\n

to the shoulder joint<\/p>\n\n\n\n

-Use dial test indicators to find deflection<\/p>\n\n\n\n

Test A3: Rollover<\/p>\n\n\n\n

Date: <\/p>\n\n\n\n

Purpose: -Ensure rider safety in the event of an accident. No rider body <\/p>\n\n\n\n

part is to make contact with the ground in the event of a roll <\/p>\n\n\n\n

over.<\/p>\n\n\n\n

Procedure: -Largest group member (Matt), sits in vehicle and secures safety <\/p>\n\n\n\n

harness over shoulders and lap<\/p>\n\n\n\n

-Remaining team members flip vehicle on its side and ensure none <\/p>\n\n\n\n

of Matt\u2019s body parts are in contact with the ground.<\/p>\n\n\n\n

-Flip the vehicle completely upside down and ensure none of Matt\u2019s <\/p>\n\n\n\n

body parts are in contact with the ground.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

-Side: hand barely skims ground; rider is protected especially if shoes are strapped to the pedals
-Full: bike shoes weren\u2019t fitting so the riders feet detached from pedals, not enough room for total knee clearance<\/p>\n\n\n\n

B. Steering & Braking<\/strong><\/p>\n\n\n\n

Test B1: Turning Radius<\/p>\n\n\n\n

Date: <\/p>\n\n\n\n

Purpose: -To ensure turning radius fulfills ASME requirement of 8.0m <\/p>\n\n\n\n

(26\u20193\u201d), test against group goal of under 5.0m (16\u20195\u201d)<\/p>\n\n\n\n

Procedure:-Use chalk to mark three lines on the pavement: one for <\/p>\n\n\n\n

exterior wheel location at the start of the turn, one 5 m from <\/p>\n\n\n\n

the base mark, and another 8m from the base mark.<\/p>\n\n\n\n

-Build up necessary, yet not excessive, speed to comfortably <\/p>\n\n\n\n

make a 180 degree turn in the vehicle while lining the exterior <\/p>\n\n\n\n

wheel up with the base mark made with chalk.<\/p>\n\n\n\n

-Begin the sharp turn, with a group member recording at an <\/p>\n\n\n\n

optimal angle to be able to review if necessary. <\/p>\n\n\n\n

-Have another group member watch the turn diligently and <\/p>\n\n\n\n

mark an estimate of the location of the exterior wheel after <\/p>\n\n\n\n

completing the turn (confirm with video)<\/p>\n\n\n\n

-Use tape measure to record turning radius <\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

-Comfortable cadence (but not sprint pace) is required for optimal turning<\/p>\n\n\n\n

-Steering subsystem seems to more easily rotate to maximum stroke when turning right, although the results are not drastically different suggesting this may be more of a comfort issue.<\/p>\n\n\n\n

<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Test B2: Braking Distance at Max Speed<\/p>\n\n\n\n

Date: <\/p>\n\n\n\n

Purpose: -To ensure vehicle fulfills ASME requirement of stopping from a <\/p>\n\n\n\n

speed of 25 km\/hr over a distance of 6.0m<\/p>\n\n\n\n

Procedure: -Measure out a stopping zone of 6 m at the end of a smooth, <\/p>\n\n\n\n

straightaway path.<\/p>\n\n\n\n

-Set up the speedometer on the bike and ensure that it is <\/p>\n\n\n\n

properly calibrated.<\/p>\n\n\n\n

-Rider rides vehicle down the straightaway, ensuring that a <\/p>\n\n\n\n

speed of at least 25 km\/hr is reached.<\/p>\n\n\n\n

-Begin to brake at the start of the 6m stopping zone. Ensure <\/p>\n\n\n\n

vehicle comes to complete stop in 6m zone<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

-Acceleration zone was straight asphalt path, approximately 50 yards long<\/p>\n\n\n\n

-The team made numerous attempts to reach the 25 km\/h mark set by the ASME competition, but failed to reach it. They believe this is due to the difficulty that the seat orientation causes when trying to pedal at high cadences, with a possible solution being further back support.<\/p>\n\n\n\n

C. Drivetrain<\/strong><\/p>\n\n\n\n

Test C1: Max Speed<\/p>\n\n\n\n

Date: <\/p>\n\n\n\n

Purpose: -To test the success of the design. Verify that goal maximum <\/p>\n\n\n\n

speed of 34 mph is reached, while steering remains functional to <\/p>\n\n\n\n

keep vehicle straight<\/p>\n\n\n\n

Procedure: -Rider rides along straightaway at full speed.<\/p>\n\n\n\n

-Record maximum speed displayed on speedometer, and <\/p>\n\n\n\n

distance necessary to obtain this speed.<\/p>\n\n\n\n

-Ensure a straight path can be ridden at this speed indefinitely<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

-Clearly, projected max speed of 35 mph was not attained. The gearing proved much too difficult to be able to shift to the lower two gears.<\/p>\n\n\n\n

-Rider orientation was not ideal for power generation. Solutions could be better back and shoulder support.<\/p>\n\n\n\n

-For lighter, weaker riders, the first and second gears were the only attainable options, making it hard to generate good speed.<\/p>\n\n\n\n

-Riders had a 100 yard warm up loop, with a 50 yard straightaway to attain maximum sprint speed.<\/p>\n\n\n\n

Test C2: Endurance<\/p>\n\n\n\n

Date: <\/p>\n\n\n\n

Purpose: -To mimic the endurance race set up by ASME. <\/p>\n\n\n\n

-To ensure durability and stability of the vehicle over an extended <\/p>\n\n\n\n

riding time and ensure quick adjustability while changing rider <\/p>\n\n\n\n

height.<\/p>\n\n\n\n

Procedure:-Set up team members along path to watch for pedestrians, and <\/p>\n\n\n\n

cones for slalom course<\/p>\n\n\n\n

-Team members alternate riding through the course, ensuring <\/p>\n\n\n\n

the vehicle runs smoothly and is stable.<\/p>\n\n\n\n

-Make sure vehicle comes to complete stop before incline by <\/p>\n\n\n\n

recreation center<\/p>\n\n\n\n

-Each member rides through the course for a total of 2 laps (one <\/p>\n\n\n\n

lap approx. 0.75 miles)<\/p>\n\n\n\n

-Record overall time.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n