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- Keywords: fractography, brittle material, failure mode, model rock. 關(guān)鍵詞：裂形學(xué)、脆性材料、破裂模式、人工巖石。
- macroscopic fractography 宏觀(guān)斷口分析
- The fractography of the fatigue crack initiation displayed cleavage f... 裂紋形成的斷裂為穿晶解理機制,預應變可導致更多的二次裂紋。
- Fractography of the quenched tensile specimen under cycling treatment changes from dimple pattern to mixed fracture with dimple and tear ridges. 循環(huán)溫度場(chǎng)作用下淬火態(tài)合金拉伸試樣斷口由韌窩型斷裂向韌窩和撕裂棱混合型斷裂轉變。
- The fractography of this steel changes from dimple fracture into cleavage fracture and inter-granular rapture. 該不銹鋼的夏氏V型缺口(CharpyV-notch)沖擊試樣斷口形貌隨著(zhù)時(shí)效時(shí)間的延長(cháng)由韌窩斷裂為主向準解理斷裂和沿晶斷裂為主變化。
- The fractography showed brittle fracture in high SiC layer and dimple fracture in the matrix of low SiC layer. 第5章研究了多層梯度復合材料的疲勞裂紋擴展行為。 研究表明，當疲勞裂紋從低SIC層向高SIC層擴展時(shí)，在相鄰兩層過(guò)渡區會(huì )發(fā)生裂紋擴展延滯。
- The bending fatigue properties and fractography of normalized tufftrided 45 steel were analyzed. 對45鋼正火態(tài)軟氮化處理前后的旋轉彎曲疲勞性能及其斷口進(jìn)行了定量和電鏡分析。
- The fracture failure reasons of the hand-gear were analyzed by means of stress situation and fractography. 通過(guò)研究斷裂時(shí)的應力狀況及宏觀(guān)斷口,對手動(dòng)小齒輪斷裂失效原因進(jìn)行了分析。
- At present, the knowledge of fractography of composite materials is growing and paid much attention. 目前，有關(guān)復合材料斷裂圖像的知識仍是有限的，但已引起人們的高度重視。
- For the notched specimens, there are multiple crack initiation sites on the fractography. 瞬斷區所承受的斷裂應力隨循環(huán)應力升高而降低；
- The fractography reveals that the alloy has high ductility because the dendritic phases produce in the alloy. 合金的斷口分析結果表明, 由于產(chǎn)生了塑性枝晶相, 因此該合金具有較高塑性。
- The fractography of the fatigue crack initiation displayed cleavage facet and more second cracks after pre-training. 裂紋形成的斷裂為穿晶解理機制，預應變可導致更多的二次裂紋。
- In this paper, ultrasonic fractography method is used to test several types of PMMA specimens. 本文利用超聲波斷口圖技術(shù)對不同類(lèi)型的PMMA試件進(jìn)行了測試。
- The fractography of this alloy is changed from dimple fracture into cleavage fracture and inter-granular rapture with the extension of aging time. 另外,該不銹鋼的CVN沖擊試樣斷口形貌隨著(zhù)時(shí)效時(shí)間的延長(cháng)由韌性斷裂機制的韌窩斷裂為主向脆性斷裂機制的準解理斷裂和穿晶斷裂為主變化。
- The achievement of fractography for metallic materials promoted the diagnosis for mechanical failure and the improvement of product quality. 金屬材料斷口學(xué)得到了充分的發(fā)展和完善，促進(jìn)了機械產(chǎn)品失效的分析診斷和產(chǎn)品內在本質(zhì)的改善；
- Fractography analyses with scanning electronic microscopy (SEM) were conducted to determine fatigue fracture mechanisms of these two lead-free solders. 此外，亦利用掃描式電子顯微鏡(SEM)觀(guān)察表面裂縫與疲勞破斷面，以了解此兩款無(wú)鉛焊錫之疲勞破裂機制。
- The sensor-network macroscope in Sonoma is designed to relay its redwood measurements to a PDA-like cellular device on the ground and then through the Internet to a server in Berkeley,70 kilometers away. 索諾馬這個(gè)感測網(wǎng)絡(luò )巨視鏡，目的是把得自紅杉的測量值，中繼給地面上類(lèi)似PDA的行動(dòng)設備，然后透過(guò)網(wǎng)際網(wǎng)路，把資料送到70公里外位于柏克萊分校的伺服器。
- Fracture analysis of those bolts was conducted by means of macro examination, fractography and chemical composition analysis. 采用宏、微觀(guān)檢驗和化學(xué)成分分析等方法對失效件進(jìn)行了檢測。
- It is found that traveling block hook was brittle fracture and crack originated from original flaw per Macro fractography and micro fractography. 對游車(chē)大鉤斷裂事故進(jìn)行了調查研究,對其斷口形貌進(jìn)行了宏觀(guān)和微觀(guān)分析,發(fā)現游車(chē)大鉤為脆性斷裂,斷口起源于原始缺陷。
- The sensor-network macroscope in Sonoma is designed to relay its redwood measurements to a PDA-like cellular device on the ground and then through the Internet to a server in Berkeley, 70 kilometers away. 索諾馬這個(gè)感測網(wǎng)絡(luò )巨視鏡，目的是把得自紅杉的測量值，中繼給地面上類(lèi)似PDA的行動(dòng)設備，然后透過(guò)網(wǎng)際網(wǎng)路，把資料送到70公里外位于柏克萊分校的伺服器。
