激光加熱 的英文怎麼說
中文拼音 [jīguāngjiārè]
激光加熱
英文
laser heating-
The simulation results suggest that, at the end of the scanning line, the dissymmetric temperature field and the great temperature gradient result in the balling phenomenon and great thermal stress, which could lead to the destruction of the sintering samples in this region. because of the coupling effect between scanning lines, the balling phenomenon is increased as the increase of the scanning lines, thus the over short scanning lines should be avoided in the sintering process. different scanning strategies have significant influence on the sintering
模擬結果表明,掃描端點溫度場的不對稱及較大的溫度梯度造成了端點球化現象,並在端點處產生較大的熱應力,使燒結成形試樣易在此處破壞;激光掃描線間的耦合作用使端點球化現象隨掃描線的增加而逐漸顯著,燒結時應避免過短的掃描線;不同掃描策略對燒結成形有很大影響,交替掃描會影響燒結試樣的質量,實際製造時應採用單向掃描策略。It is mainly added a set of system for the collection of the optical pump and a furnace heated to a high temperature besides the ft - infrared and raman spectrometer
它主要在紅外光譜儀和激光拉曼光譜儀的基礎上加設了一套實時高溫紅外光學泵浦採集系統和樣品高溫加熱爐。The electronic temperature, intensities of all lines and continuous spectra gradually increased with the increment of laser energy, and they got to maximum at different laser energy. our results of copper and aluminum show that there are possibly different thresholds of laser energy to electronic temperature and intensities of emission spectra of laser ablated plasma. at the different environmental gas pressure, spatial emission intensity distribution is explained by the competition among " heat reservoir effect ", " confined effect " and " s hadow effect "
認為cu等離子體羽的發光機制是由電子與粒子的碰撞傳能、電子與離子的復合形成的;隨激光能量的增加, cu等離子體特徵輻射(分立譜) 、連續背景輻射(連續譜) 、電子溫度都出現最大值;結合對al的實驗結果說明:激光燒蝕金屬產生的等離子體,其特徵輻射、連續輻射、電子溫度可能都存在一定的能量閾值;背景氣壓對激光燒蝕等離子體譜線的影響,其機理可以認為是「熱庫效應」 、 「約束效應」及「陰影效應」相互競爭的綜合結果。In the surface processing of pyrolytic graphite grid, we had done mainly in completely to clear all kinds of ordures, impurities and grime block which was born in the laser cutting process of the grid
在熱解石墨柵極處理方面,主要為完全清除激光加工過程中產生的各種污物、雜質及垢塊,保證熱解石墨柵極內外表面的清潔度。Effect of heating configuration on laser heating of flying cylinder
影響激光加熱運動圓柱體的加熱線型的分析Laser bending of sheet metals is a highly flexible forming technique
摘要激光彎曲是一種利用激光加熱來實現構件的柔性成形技術。At last the quantified adhesion force is given by a simplified formula. 2. temperature field is the key factor affecting the process of laser material processing
從激光與材料相互作用的理論出發,建立了激光乾式和濕式清洗的激光加熱模型,並利用數字方法模擬了清洗中溫度場的動態分佈。By the line s - h sensor mentioned in chapter 3, measurements have been made to a beam path heated by hf laser. by a high speed interferometer, tomographic measurement was made on a air column heated by electric powered wire
用第三章設計的線陣s - h傳感器對hf激光加熱光路進行了測量研究,在此基礎上,用高速干涉儀對電熱絲加熱的空氣柱進行了模擬層析測量研究。This paper establishes a simple physical model of the non - linear temperature field of the metal material heated by monopulse laser and makes an analytical study on the physical model. the modeling results are basically in agreement with those of experiments
建立了單脈沖激光加熱下金屬材料非線性溫度場的簡單物理模型,並進行了解析研究,所得結果與實驗結果基本符合The laser heats up the diamond and causes the temperature rises on the surface of diamond film. at the different temperature, the different physical and chemic change will happen. the rules of the laser ablating diamond were researched by experiment
從激光加熱和熱傳導的理論出發,研究了激光傳熱及其在金剛石表面引起的溫度分佈情況,以及在不同的溫度和激光功率下,金剛石膜發生的不同的物理和化學變化。Analyzing the sintering theory of nano material and the heat conduction theory of laser machining, the mathematic model of grain size growth of nano material in laser sintering is built
在分析納米材料已有燒結理論的基礎上,結合激光加工中有關熱傳導理論,建立了納米材料在激光作用下晶粒尺寸變化的數學模型。The peak in the direction of the target normal is consistent with mat of predicted by the resonance absorption and another peak of hot electrons emission in the specular reflection direction is due to the multi - acceleration mechanisms. the hot electrons emission along the back - reflection direction is probably caused by the acceleration of the back - reflection laser, which is for the first time put forward by us
其中,靶法線方向的超熱電子發射峰與共振吸收( res ~ eabso甲tion )機制所預言的一致;根據理論估算提出激光反射方向的超熱電子發射峰是幾種加速機制共同作用的結果;我們首次提出背反射激光加速超熱電子的新機制,並用此機制解釋了激光背反射方向產生的超熱電子發射峰。The experimental results are helpful to understand the acceleration mechanisms of the hot electron emission in the interaction of the us - ui laser pulse with plasma. an anisotropy energy distribution of the hot electrons emiaon has been observed for the first time in the experiments. the energy spectrum of hot electrons resulted from the resonance absorption at the direction of target normal is a maxwellian - like distribution
E11分佈,擬合的超熱電子有效溫度約200kev左右,超熱電子的最大能量約zmev ,加速電子的主導機制是共振吸收機制;反射方向超熱電子的能譜在低能段出現一個局部的平臺( pla1leau ) ,呈現出非類maxwen分佈,這是幾種加熱機制共同作用的結果,其中佔主導地位的是反射激光加速機制。Abstract : as a research focus on laser processing and advanced manufacturing technique, laser remanufacturing technique has been investigated recent years
摘要:激光再製造技術近年來在國內外受到普遍關注,形成激光加工與先進製造技術一個前沿和熱點,已在國內外得到重要的工業應用。The research for the absorptance of materials is significant to the development of laser material processing. the measurement method is the foundation of the absorptance research. in this paper the lumped method based on heat transfer is established for the absorptance of laser, and the measuring apparatus is also built up. as examples, the absorptance of laser is measured for several ordinary engineering materials
材料對激光吸收的研究工作對激光加工的發展有著非常重要的意義.而吸收率測量方法的研究是材料對激光吸收研究工作的基礎.從量熱的角度出發,利用傳熱學中的集總參數法建立了測量吸收率的方法,設計了相應的試驗裝置,並測量了幾種常用工程材料對激光的吸收率In chapter four, in our experiments, we selected four representative mould steels as samples. after laser heat treatment, the hardness of samples was measured by special instrument, microstructure was also photographed to be analyzed carefully. through these experiments, we also debated on the theories which explain the new phenomenon occurring in laser overlapping treatment
第二章:介紹了工業中的各種激光加工技術和激光加工系統,詳細說明了本實驗所使用的高功率激光加工系統;第三章:詳細敘述了激光淬火的機理和熱傳導數學模型;第四章:通過實驗,分析激光淬火后的模具鋼的硬化帶的硬度分佈及金相組織特性,同時對激光交疊熱處理的特點及形成機理都作了深入的探討。Laser quenching is one of the important field of using laser technology in industry, which is closely connected with several subjects, i. e. laser physics theory, laser processing technology, metal physics et, al
激光淬火(相變硬化)是激光技術在工業中應用的一個重要領域,該技術與激光物理學、激光加工技術、金屬學熱處理等幾門學科緊密相關。According to the heat conduction spreading only in the direction of local surface normal on infinitesimal control surface and laser machining reaching steady state instantaneously, a three - dimensional transient partial differential equation was translated into a one - dimensional constant differential equation
根據在微元控制面上熱傳導只發生在表面法向,並且激光加工在暫態達到準穩態,將三維暫態偏微分方程轉化為一維常微分方程。Aiming at reducing the roughness of the sidewalls in the manufacturing of the pmma liquid pool by co _ 2 lasers, in the hypothesis that the intensity of the laser has a guassian distribution, the temperature distribution in slab material with limited thickness is studied according to traditional thermal conductive formulas, and the condensing progress of the melted surface of sidewalls is researched. it is concluded from the discussion of temperature distribution that the air bulbs is the major reason for the roughness of the sidewalls
為降低co _ 2激光加工pmma材料儲液池側壁粗糙度,本文根據傳統的熱傳導方程,假定激光強度為高斯分佈,對有限厚板狀材料的溫度場進行分析;並考察側壁表面熔化層凝固過程的特徵;結果表明,側壁粗糙度形成的主要原因在於側壁表面熔化層凝固前氣泡未及時析出。Based on the principles of co2 laser machining polymer, heat conduction theory and energy conservation principal at the ablation front, a three dimensional transient ablation model of laser machining was built
在co2激光加工聚合物原理基礎上,根據傳熱學原理和燒蝕面能量守恆原理,建立了激光加工三維暫態燒蝕模型。分享友人