發(fā)布時間：2018-06-13 10:25

  本文選題：光纖傳感 + 光纖布拉格光柵��； 參考：《光學精密工程》2016年06期

【摘要】：考慮到FBG傳感器用于機床應變監(jiān)測時,膠黏劑蠕變對靜態(tài)載荷下FBG應變傳遞的影響,研究了膠黏劑線黏彈性對粘貼式FBG應變傳遞的影響規(guī)律�；�于粘貼層為線黏彈性材料重新建立了粘貼式FBG應變傳遞模型,并將粘貼層簡化為三參量固體模型,得到了粘貼式FBG傳感器瞬時和準靜態(tài)的應變傳遞關(guān)系。然后,通過理論和實驗分析了粘貼長度、寬度、高度和中間層厚度對瞬時和準靜態(tài)應變傳遞的影響。實驗結(jié)果表明:在恒定應力作用下,黏接劑蠕變會導致FBG的應變隨時間而變化,當粘貼長度在30mm以上時,FBG應變傳遞率隨時間的變化在4%左右;當粘貼長度為15mm時,應變傳遞率變化接近7%。分析該結(jié)果得出:適當增加粘貼長度,減小粘貼中間層厚度可以減小膠黏劑蠕變對應變傳遞的影響。該結(jié)論對基于粘貼式FBG的高精密測量具有指導意義。
[Abstract]:Considering the effect of creep of adhesive on strain transfer of FBG under static load, the effect of linear viscoelasticity of adhesive on strain transfer of adhesive FBG is studied. Based on the linear viscoelastic material, the strain transfer model of the adhesive FBG is re-established, and the adhesive layer is simplified into a three-parameter solid model. The instantaneous and quasi-static strain transfer relations of the adhesive FBG sensor are obtained. Then, the effects of the length, width, height and thickness of the interlayer on the transient and quasi-static strain transfer are analyzed theoretically and experimentally. The experimental results show that under constant stress, the strain of FBG will change with time, when the bonding length is above 30mm, the strain transfer rate of FBG will change by about 4%, and when the adhesive length is 15mm, the strain transfer rate of FBG will change by about 4%, and when the adhesive length is 15mm, the strain transfer rate of FBG will change by 4%. The change of strain transfer rate is close to 7%. It is concluded that the effect of adhesive creep on strain transfer can be reduced by increasing the bonding length properly and decreasing the thickness of the adhesive interlayer. This conclusion has guiding significance for high precision measurement based on sticker FBG.
【作者單位】： 武漢理工大學機電工程學院;
【基金】：國家自然科學基金資助項目(No.51375359) 湖北省自然科學基金重點項目(No.2013CFA047) 武漢理工大學自主創(chuàng)新研究基金資助項目(No.155204006)
【分類號】：TP212
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本文編號：2013714