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