To ensure our jack stand is able to perform under real world use, testing was conducted to provide ample evidence that the product will have adequate strength in all conditions to meet or exceed safety standards. Qualification testing consisted of dimensional inspection, visual inspection, and mechanical testing.
Dimensional Inspection:
All parts of the assembled jack stand were checked to ensure they were within the specifications of the part drawings.
Visual Inspection:
All visually inspected defects met the required values with tables shown below.
| Required Value | Inspected Value | |
| Disbond | <.1 in | .06 in |
| Fractures | 0 cracks/fractures | 0 cracks/fractures |
| Splintered (Base/Tube) | <5 splinters | 0 splinters |
| Plastic Deformation | No visible bending | No visible bending |
Splinters in Holes |
Required Value |
Inspected Value |
Hole 1 |
<5 Splinters |
0 splinters |
Hole 2 |
<5 Splinters |
0 splinters |
Hole 3 |
<5 Splinters |
0 splinters |
Hole 4 |
<5 Splinters |
0 splinters |
Hole 5 |
<5 Splinters |
0 splinters |
Hole 6 |
<5 Splinters |
0 splinters |
Mechanical Testing:
First, the testing requirements of The American Society of Mechanical Engineers safety standard for Portable Automotive Service Equipment (ASME PASE) was used to qualify the jack stand to be rated as a 1-ton stand. The standard requires a centered and off-center load test at both the top and bottom positions.
Centered Load Test
(4000 lbf for 10 minutes)
Off-Centered Load Test
(2000 lbf for 10 minutes)
Design Concern |
Requirement |
Test Result |
Adequate Strength (Max Height) |
No Damage |
No Damage |
Adequate Strength (Min Height) |
No Damage |
No Damage |
Permanent Deformation (Max Height) |
<1/8 in. |
0.03 in. |
Permanent Deformation (Min Height) |
<1/8 in. |
0.02 in. |
Environmental Testing:
To ensure the jack stand can hold up to environmental exposures, three point flexural testing was conducted on 3 different samples: control, water submerged, UV exposed.
Flexural testing (ASTM D7264) Water Submerged, UV Exposed, Control
Average Flexural Strength (lbf) |
% of As Manufactured |
|
As Manufactured |
107.93 |
100% |
Submerged in Water |
103.00 |
95.4% |
QUV |
114.73 |
106.3% |