应用激光
應用激光
응용격광
APPLIED LASER
2001年
1期
9-12
,共4页
沈平%连建设%胡建东%郭作兴%孙炳云
瀋平%連建設%鬍建東%郭作興%孫炳雲
침평%련건설%호건동%곽작흥%손병운
激光点火%自蔓延高温合成%模型
激光點火%自蔓延高溫閤成%模型
격광점화%자만연고온합성%모형
基于热理论建立了凝聚态自反应材料的一维激光点火理论模型，并对其作了解析以揭示点火延迟时间与激光处理参数和材料特征之间的关系。尝试进行了激光点燃Ni-33．3at％Al粉末压坯的实验，并将实验值与计算值做了对比以验证模型的合理性。结果表明计算值与实验值吻合较好。因此，激光辐射点火从根本上应归结于热的作用。
基于熱理論建立瞭凝聚態自反應材料的一維激光點火理論模型，併對其作瞭解析以揭示點火延遲時間與激光處理參數和材料特徵之間的關繫。嘗試進行瞭激光點燃Ni-33．3at％Al粉末壓坯的實驗，併將實驗值與計算值做瞭對比以驗證模型的閤理性。結果錶明計算值與實驗值吻閤較好。因此，激光輻射點火從根本上應歸結于熱的作用。
기우열이론건립료응취태자반응재료적일유격광점화이론모형，병대기작료해석이게시점화연지시간여격광처리삼수화재료특정지간적관계。상시진행료격광점연Ni-33．3at％Al분말압배적실험，병장실험치여계산치주료대비이험증모형적합이성。결과표명계산치여실험치문합교호。인차，격광복사점화종근본상응귀결우열적작용。
A theoretical model for laser -induced ignition of condensed self -reaction materials was set up based on thermal theory,and an analytical solution wassought to reveal the relationship of ignition delay time with laser processing parameters as well as material characteristics. An experiment of laser ignition of Ni - 33.3 at％ Al powder compacts was also attempted and the comparison between experimental and computational data of ignition delay time was made to verify the validity of the model. The results show that the calculated values agree well with that of the experiment. As a consequence, the mechanism of ignition by laser beams irradiation can be attributed to thermal in origin.
