micron optics, inc
TRANSCRIPT
7/2/07 Micron Optics Inc. pg 1 of 6
The following report provides a comprehensive summary of fatigue testing on the os3100
series strain gage. The data below includes both bending and elongation tests.
Bending Fatigue Test:
Bending fatigue was set up using a vibration fatigue testing machine model 25-HLS-T
manufactured by All American Tool and MFG. Company. The unit has a frequency range
of 5 to 100 Hz and maximum amplitude of 0.15 inches.
This setup, pictured above, was able to provide a strain range of 1,100 µstrain from
bending.
FP1-12, FP1-14
Test Start Date - 2006-04-28 08:49:41
Test End Date - 2006-05-09 13:52:13
Frequency – 20 Hz
Total No. Cycles – 13,346,780
Stain Range – 1,100 µstrain (FP1-12 – 0 to -1,100µs, FP1-14 – 0 to +1,100µs)
Test stopped to convert machine to high strain elongation test.
Mounting type – Weld on
Micron Optics, Inc.
os3100 Style Strain Sensor
Comprehensive Fatigue Test Report Preliminary
7/2/07 Micron Optics Inc. pg 2 of 6
FP1-12 - Fatigue Test - 20 Hz
1545.000
1545.200
1545.400
1545.600
1545.800
1546.000
1546.200
1546.400
1546.600
1546.800
1547.000
1 2001 4001 6001 8001 10001 12001 14001 16001 18001 20001 22001 24001 26001 28001 30001
Time - Period = 30 sec
WL
(n
m)
0
5
10
15
20
25
30
35
Te
mp
°C
Sensor 12
Temp - Beam
FP1-14 - Fatigue Test - 20 Hz
1528.500
1528.700
1528.900
1529.100
1529.300
1529.500
1529.700
1529.900
1530.100
1530.300
1 2001 4001 6001 8001 10001 12001 14001 16001 18001 20001 22001 24001 26001 28001 30001
Time - period = 30 sec
WL
- n
m
0
5
10
15
20
25
30
35
Te
mp
°C
Sensor 14
Temp - Beam
Temperature of the beam and machine varied with room temperature and followed the day/night and weekend air conditioning high/low cycle. Elongation Fatigue Test: The balance of fatigue tests was performed on an elongation test configuration to apply linear strain, higher tension and higher speed. The test setup uses the same vibration fatigue testing machine but with modified tooling and is shown in the photo below:
7/2/07 Micron Optics Inc. pg 3 of 6
On the above setup the beam on the left is fixed and the beam on the right moves to provide the specified elongation. Detailed test data is summarized below: FP1-92
Test Start Date - 2006-10-05 10:47:35
Test End Date - 2006-10-17 11:31:59
Frequency – 31 Hz
Total No. Cycles – 32,223,384
Strain Range - ±2,950 µstrain
Test stopped to test additional sensors.
Mounting type – Weld on
7/2/07 Micron Optics Inc. pg 4 of 6
Fatigue Test - FlexPatch FP1-092
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1 3001 6001 9001 12001 15001 18001 21001 24001 27001 30001
Time - Period = 30 seconds
WL
- n
m
0
5
10
15
20
25
30
Te
mp
°C
FP1-92
Temp Beam
FP1-121 & FP1-126:
Test Start Date - 2006-10-17 14:36:14
Test End Date - 2006-10-25 15:19:03
Frequency – 30 Hz
Total No. Cycles – 20,813,070
Strain Range - ±2,400 µstrain
Test stopped to test additional sensors.
Mounting type – Weld on
FP1-126 Fatigue Test - 30 Hz
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1 3001 6001 9001 12001 15001 18001 21001
Time - Period = 30 seconds
WL
- n
m
24.5
25
25.5
26
26.5
27
27.5
Te
mp
°C
FP1-126
Temp Beam
FP1-139 & FP1-140:
7/2/07 Micron Optics Inc. pg 5 of 6
Test Start Date - 2006-11-03 11:20:57
Test End Date - 2006-12-11 14:25:46
Frequency – 31 Hz
Total No. Cycles – 102,122,959
Strain Range - ±1,990 µstrain
Test stopped after 100 million cycles
Mounting type – Weld on
FP1-139 Fatigue Test - 30 Hz
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1 3001 6001 9001 12001 15001 18001
Time - Period = 3 minutes
WL
- n
m
0
5
10
15
20
25
30
35
40
Te
mp
°C
FP1-139
Temp - Beam
FP1-140 Fatigue Test - 30 Hz
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1 2001 4001 6001 8001 10001 12001 14001 16001 18001
Time - Period = 3 minutes
WL
- n
m
0
5
10
15
20
25
30
35
40
Tem
p °
C
FP1-140
Temp - Beam
A100342:
Test Start Date - 2007-02-14 16:16:08
Test End Date - 2007-03-08 08:49:54
Frequency – 33 Hz
Total No. Cycles – 61,842,858
Strain Range - ±2,200 µstrain
7/2/07 Micron Optics Inc. pg 6 of 6
Test stopped after 60 million cycles
Mounting type – Glue-On using Vishay AE-10 adhesive
A100342 Glue-On - Fatigue Test
1524
1526
1528
1530
1532
1534
1536
1 2001 4001 6001 8001 10001 12001 14001 16001 18001 20001 22001 24001 26001 28001 30001
Time - Period = 1 minute
WL
- n
m
0
5
10
15
20
25
30
35
Te
mp
°C
A100342
Temp
A100335:
Test Start Date - 2007-05-14 07:52:12
Test End Date - 2007-05-25 13:41:09
Frequency – 30 Hz
Total No. Cycles – 29,140,410
Strain Range - ±1,900 µstrain
Test stopped after 29 million cycles
Mounting type – Glue-On using JB Weld adhesive
A100335 Glue-On - JB Fatigue
1528
1530
1532
1534
1536
1538
1540
1542
1 2001 4001 6001 8001 10001120011400116001
Time Period = 1 min
WL
- n
m
0
5
10
15
20
25
30
35
Tem
p °
C
A100335
Temp