發(fā)布時(shí)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(xué)精密工程》2016年06期

【摘要】：考慮到FBG傳感器用于機(jī)床應(yīng)變監(jiān)測時(shí),膠黏劑蠕變對(duì)靜態(tài)載荷下FBG應(yīng)變傳遞的影響,研究了膠黏劑線黏彈性對(duì)粘貼式FBG應(yīng)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(yīng)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(shí)和準(zhǔn)靜態(tài)的應(yīng)變傳遞關(guān)系。然后,通過理論和實(shí)驗(yàn)分析了粘貼長度、寬度、高度和中間層厚度對(duì)瞬時(shí)和準(zhǔn)靜態(tài)應(yīng)變傳遞的影響。實(shí)驗(yàn)結(jié)果表明:在恒定應(yīng)力作用下,黏接劑蠕變會(huì)導(dǎo)致FBG的應(yīng)變隨時(shí)間而變化,當(dāng)粘貼長度在30mm以上時(shí),FBG應(yīng)變傳遞率隨時(shí)間的變化在4%左右;當(dāng)粘貼長度為15mm時(shí),應(yīng)變傳遞率變化接近7%。分析該結(jié)果得出:適當(dāng)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(duì)應(yīng)變傳遞的影響。該結(jié)論對(duì)基于粘貼式FBG的高精密測量具有指導(dǎo)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(xué)機(jī)電工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(No.51375359) 湖北省自然科學(xué)基金重點(diǎn)項(xiàng)目(No.2013CFA047) 武漢理工大學(xué)自主創(chuàng)新研究基金資助項(xiàng)目(No.155204006)
【分類號(hào)】：TP212
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本文編號(hào)：2013714