Author Affiliations
Optical-Mechanical Structure Laboratory, Chang Guang Satellite Technology Co., Ltd., Changchun 130102, Chinashow less
Fig. 1. Detector assembly structure
Fig. 2. Schematic diagram of calculation parameters
Fig. 3. Relationship between shear strength of epoxy adhesive and thickness of adhesive layer[14]
Fig. 4. Relationship between shear strength of silicone rubber and thickness of adhesive layer[15]
Fig. 5. The schematic diagram of the bonding structure between the detector and the base
Fig. 6. Welding schematic diagram of circuit board and focal plane assembly
Fig. 7. Testing element
Fig. 8. Detector component deformation cloud diagram
Fig. 9. Detector assembly bonding physical entity
Fig. 10. Temperature change experiment site
Fig. 11. Vibration test condition
Fig. 12. Vibration test site
Fig. 13. Detector marker points schematic diagram
Properties | Merit | Fault | Application | Epoxy resin | High bonding strength, low curing shrinkage, weather resistance | High brittleness, insufficient toughness, difficult to peel | Aerospace, electronics, optics, etc | Acrylic resin | Fast curing, impact resistant | Difficult to peel, poor stability, monomer volatile | Automobile fuel tanks, electrical appliances,etc | UV glue | Controlled curing speed, environmentally friendly | Curing requires UV lamp equipment, difficult to peel | Medical, electrical appliances, etc | Polyurethane | Wide range of materials, adjustable flexibility, low temperature resistance | Poor heat resistance, not acid- resistance, easy to produce bubbles | Automotive, machinery, wood, etc | Anaerobic adhesive | Low viscosity, fast curing at room temperature, easy to remove | Highly demanding bonding surfaces, sensitive to temperature and pressure | Mechanical locking, leak-proof sealing, etc | Silicone rubber | Resistance to oxidation and temperature change | Slightly lower bond strength | Electronics, electrical appliances, etc |
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Table 1. Adhesive properties
Bonding agent | Epoxy glue | Silicone rubber | Bonding position | Long side | Short side | Long side | Short side | Thickness/mm | 0.39 | 0.33 | 0.21 | 0.18 |
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Table 2. Calculation results of adhesive layer thickness
No. | Bottom adhesive and bonding area/mm2 | Side adhesive and bonding area/mm2 | 1 | Epoxy glue/907.5 | - | 2 | Epoxy glue/907.5 | Silicone rubber/598.3 | 3 | Epoxy glue/907.5 | Epoxy glue/598.3 | 4 | Silicone rubber/907.5 | Epoxy glue/598.3 | 5 | Silicone rubber/907.5 | Silicone rubber/598.3 | 6 | Silicone rubber/907.5 | Silicone rubber(dot-coated epoxy on top surface)/598.3 |
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Table 3. Binding scheme
No. | Output unit | ∆x/10−3 mm | ∆y/10−3 mm | ∆z/10−3 mm | ∆s/10−3 mm | $\overline{\Delta {s}} $/10−3 mm | 1 | ① | −0.264 6 | 1.2705 | 0.0870 | 1.301 | 1.0683 | ② | 0.268 4 | 1.1976 | 0.0693 | 1.229 | ③ | 0.008 1 | 1.3612 | 0.1261 | 1.367 | ④ | 0.132 2 | 0.7017 | −0.1145 | 0.723 | ⑤ | −0.087 6 | 0.71391 | −0.0561 | 0.721 | 2 | ① | −0.278 7 | 1.7554 | 0.1703 | 1.785 | 1.4838 | ② | 0.281 6 | 1.6550 | 0.1481 | 1.685 | ③ | −0.016 3 | 1.9191 | 0.1201 | 1.923 | ④ | 0.098 2 | 0.9942 | −0.0152 | 0.999 | ⑤ | −0.089 1 | 1.0231 | −0.0164 | 1.027 | 3 | ① | −0.3038 | 1.7940 | 0.1914 | 1.83 | 1.4966 | ② | 0.3023 | 1.6945 | 0.1763 | 1.73 | ③ | −0.0169 | 1.8699 | 0.0991 | 1.873 | ④ | −0.1092 | 1.0318 | −0.0116 | 1.038 | ⑤ | 0.1175 | 1.0054 | −0.0084 | 1.012 | 4 | ① | −0.4186 | 1.5435 | 0.1382 | 1.605 | 1.2717 | ② | 0.4099 | 1.4483 | 0.1231 | 1.51 | ③ | −0.0205 | 1.5131 | 0.0472 | 1.514 | ④ | −0.1503 | 0.8490 | −0.1542 | 0.876 | ⑤ | 0.1616 | 0.8255 | −0.1460 | 0.854 | 5 | ① | −0.3124 | 1.4898 | 0.0429 | 1.523 | 1.1877 | ② | 0.3126 | 1.4129 | 0.0221 | 1.447 | ③ | 0.0088 | 1.4641 | 0.0821 | 1.466 | ④ | −0.0861 | 0.7345 | −0.1982 | 0.766 | ⑤ | 0.1067 | 0.7038 | −0.1910 | 0.737 | 6 | ① | −0.3047 | 1.4197 | 0.3842 | 1.502 | 1.1691 | ② | 0.3188 | 1.3432 | 0.3463 | 1.423 | ③ | 0.0442 | 1.4298 | 0.3119 | 1.464 | ④ | −0.0874 | 0.7210 | 0.1429 | 0.740 | ⑤ | 0.1363 | 0.6997 | 0.0722 | 0.716 |
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Table 4. Detector photosensitive surface output node displacement
Parameter | Experiment condition | Pressure | Atmospheric | Temperature | −22 ℃/+42 ℃ | Time | 2 h | Cycle times | 4.5 | Tolerance | Low-temperature(T0+4)℃,High-temperature(T0−4)℃ | Rate of change (temperature) | 3-5 ℃/min |
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Table 5. Temperature change experiment condition
No. | Marker | Pre-test/mm | Post-thermal cycling/mm | Post-vibration/mm | 1 | L | (0,0,0) | (0,0,0) | (0,0,0) | R | (−0.051,−30.457,−0.02) | (−0.053,−30.456,−0.02) | (−0.052,−30.455,−0.02) | 5 | L | (0.107,−160.343,−0.11) | (0.106,−160.336,−0.11) | (0.106,−160.336,0.12) | R | (0.029,−190.801,−0.13) | (0.028,−190.794,−0.13) | (0.028,−190.796,−0.13) | 6 | L | (−0.031,−80.411, 0.01) | (−0.031,−80.407,0.01) | (−0.03,−80.408,0.01) | R | (−0.007,−110.870,0) | (−0.006,−110.865,0) | (−0.006,−110.867,0) |
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Table 6. Marking point test data before and after the test
No. | Post-thermal cycling | | Post-vibration | Flatness/mm | Parallelism change/mm | | Flatness/mm | Parallelism change/mm | 1 | 0.0043 | 0.0036 | | 0.0005 | 0.0039 | 5 | 0 | 0.0004 | | 0.0003 | 0.0012 | 6 | 0.0007 | 0.0001 | | 0 | 0.0001 |
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Table 7. Detector coplanar accuracy detection data