国外低温内式应变天平技术研究进展

赵莉; 邹满玲; 田静琳; 羊玺

doi:10.11729/syltlx20160090

国外低温内式应变天平技术研究进展

doi: 10.11729/syltlx20160090

中国空气动力研究与发展中心, 四川绵阳 621000

详细信息

通讯作者:
赵莉(1972-), 女, 湖南南县人, 高级工程师。研究方向:情报研究与信息化建设。通信地址:四川省绵阳市二环路南段6号207信箱(621000)。E-mail:1262162204@qq.com

中图分类号: V211.752;TH715.1⁺12
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- 被引次数: 0
出版历程
- 收稿日期: 2016-06-02
- 修回日期: 2016-09-21
- 刊出日期: 2016-12-25

Advances of research on internal cryogenic strain gauge balance abroad

China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China

摘要

摘要: 作为低温风洞测力试验的核心测试设备，低温天平受低温风洞气流温度低、温度变化大的影响，会产生零点温度漂移、灵敏度变化等一系列问题，对试验数据的精准度产生影响。因此，相较常温天平而言，低温天平的研制要求更多，难度也更大。在广泛调研国外低温天平研究进展与关键技术的基础上，系统介绍了低温天平的设计与优化、天平材料的选取及热处理、天平的加工与制造、天平应变片的匹配及粘贴、天平校准方法及校准设备等天平研制的多个关键环节，并对未来低温天平技术的发展进行了展望，为我国低温天平的研制及工程化应用提供参考。
- 低温风洞 /
- 应变天平 /
- 天平设计 /
- 研究进展
Abstract: Cryogenic balance is the key measurement in cryogenic wind tunnel. Due to low air temperature and large temperature variation in the cryogenic wind tunnel, a series of problems arise, such as thermal zero drift and the variation of sensitivity. Therefore there is a risk of decreasing precision of the test data. Thus compared to conventional balances, the development of the cryogenic balance has more requirements and difficulties. By a wide literature survey, the key elements of cryogenic balance are sorted out as follows:design and optimization of balance, material selection and thermal treatment, processing and manufacturing of balance, matching of strain gauge, moisture treatment of balance at low ambient temperature, balance calibration algorithm as well as calibration apparatus and data acquisition equipment. A prospect of the cryogenic balance technologies is also given. The research results presented in this paper are of reference value for development and engineering application of cryogenic balance.
- cryogenic wind tunnel /
- strain gauge balance /
- balance design /
- research advances

HTML全文

图 1 NLR 771天平^[18]

Figure 1. NLR balance 771^[18]

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图 2 温度梯度作用下RAE被测天平的信号变化^[18]

Figure 2. Signals of RAE-test balance due to temperature gradients^[18]

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图 3 温度梯度效应解决方案^[19]

Figure 3. Solution for temperature gradient effect^[19]

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图 4 天平预制部件^[25]

Figure 4. Prefabricated parts of balance^[25]

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图 5 焊接后的天平体^[25]

Figure 5. The body of balance after welding^[25]

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图 6 最终完成的天平^[25]

Figure 6. The balance after external machining^[25]

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图 7 兰利使用的低温天平应变片匹配盘片^[13]

Figure 7. Gage matching disc for LARC cryo-balances^[13]

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图 8 兰利防潮处理实验箱^[21]

Figure 8. Laboratory chamber used for application of moisture resistant coating^[21]

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图 9 天平校准的二阶/三阶拟合^[25]

Figure 9. Second-and third-order descriptions of balance calibration^[25]

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图 10 NTF的变温校准台^[21]

Figure 10. Variable temperature calibration stand of NTF^[21]

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图 11 天平自动校准装置^[37]

Figure 11. Automatic calibration machine^[37]

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图 12 NASA的单矢量天平校准系统^[40]

Figure 12. Single-vector balance calibration system of NASA^[40]

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表 1 常见的低温用粘结剂^[29]

Table 1. Common adhesives for low temperature^[29]

项目/ 型号	固化	成份	粘结条件	使用温度范围/℃	制造单位
UC-27	常温	聚氨酯	室温，加压24h	-269~室温	日本共和公司
PC-6		酚醛	150℃，加压24h	-269~250	日本共和公司
EPY-500		环氧	93℃，加压26h	-269~260	美国BLH 公司
PLD-700	加热	聚酰亚胺	260℃，加压2h	-269~399	美国BLH 公司
M-Bond 610		环氧- 酚醛	177℃，加压1h	-269~260	美国MM 公司
M-Bond AE-15		环氧	65℃，加压2h	-269~96	美国MM 公司

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