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| 1 | High-efficiency forming processes for complex thin-walled titanium alloys components: state-of-the-art and perspectives显示文摘Complex thin-walled titanium alloy components play a key role in the aircraft,aerospace and marine industries,offering the advantages of reduced weight and increased thermal resistance.The geometrical complexity,dimensional accuracy and in-service properties are essential to fulfill the high-performance standards required in new transportation systems,which brings new challenges to titanium alloy forming technologies.Traditional forming processes,such as superplastic forming or hot pressing,cannot meet all demands of modern applications due to their limited properties,low productivity and high cost.This has encouraged industry and research groups to develop novel high-efficiency forming processes.Hot gas pressure forming and hot stamping-quenching technologies have been developed for the manufacture of tubular and panel components,and are believed to be the cut-edge processes guaranteeing dimensional accuracy,microstructure and mechanical properties.This article intends to provide a critical review of high-efficiency titanium alloy forming processes,concentrating on latest investigations of controlling dimensional accuracy,microstructure and properties.The advantages and limitations of individual forming process are comprehensively analyzed,through which,future research trends of high-efficiency forming are identified including trends in process integration,processing window design,full cycle and multi-objective optimization.This review aims to provide a guide for researchers and process designers on the manufacture of thin-walled titanium alloy components whilst achieving high dimensional accuracy and satisfying performance properties with high efficiency and low cost. | Kehuan Wang Liliang Wang Kailun Zheng Zhubin He Denis J Politis Gang Liu Shijian Yuan | 2020 | International Journal of Extreme Manufacturing2020，2，3： | 10 |
| 2 | Competition between fusion-evaporation and multifragmentation in central collisions in ^(58)Ni+^(48)Ca at 25A MeV显示文摘The experimental data concerning the58Ni+48Ca reaction at Elab(Ni)=25A MeV,collected by using the CHIMERA 4π device,have been analyzed in order to investigate the competition among different reaction mechanisms for central collisions in the Fermi energy domain.As a main criterion for centrality selection we have chosen the flow angle(flow) method,making an event-by-event analysis that considers the shape of events,as it is determined by the eigenvectors of the experimental kinetic-energy tensor.For the selected central events(flow >60°) some global variables,good to characterize the pattern of central collisions have been constructed.The main features of the reaction products were explored by using different constraints on some of the relevant observables,like mass and velocity distributions and their correlations.Much emphasis was devoted,for central collisions,to the competition between fusion-evaporation processes with subsequent identification of a heavy residue and a possible multifragmentation mechanism of a well defined(if any) transient nuclear system.Dynamical evolution of the system and pre-equilibrium emission were taken into account by simulating the reactions in the framework of transport theories.Different approaches have been envisaged(dynamical stochastic BNV calculations + sequential SIMON code,QMD,CoMD,etc.).Preliminary comparison of the experimental data with BNV calculations shows reasonable agreement with the assumption of sequential multifragmentation emission in the mass region of IMFs close to the heavy residues.Possible deviations from sequential processes were found for those IMFs in the region of masses intermediate between the mass of heavy residues and the mass of light IMFs.Further simulations are in progress.The experimental analysis will be enriched also by information obtained inspecting the IMF-IMF correlation function,in order to elucidated the nature of space-time decay property of the emitting source associated with events having the largest IMF multiplicity. | FRANCALANZA L ABBONDANNO U AMORINI F BARLINI S BINI M BOUGAULT R BRUNO M CARDELLA G CASINI G AGOSTINO M D' De FILIPPO V De SANCTIS J GERACI E GIUSSANI A GRAMEGNA F GUIOT B KRAVCHUK V La GUIDARA E LANZALONE G Le NEINDRE N MAIOLINO C MARINI P MORELLI L OLMI A PAGANO A PAPA M PIANTELLI S PIRRONE S POLITI G POGGI G PORTO F RUSSOTTO P RIZZO F VANNINI G VANNUCCI L | 2013 | Nuclear Science and Techniques2013，24，5： | 2 |
| 3 | QFD,organisational creativity and productivity显示文摘 | POLITIS J D | 2005 | International Journal of Quality & Reliability Management2005，22，1： | 1 |
| 4 | Entrepreneurs' attitudes to- wards failure- an experiential learning approach 显示文摘 | Gabrielsson J Politis D | 2007 | Interna- tional Journal of Entrepreneurial Behavior & Research2007，15，4： | 1 |
| 5 | Near-Infrared Spectroscopic Investigation of Inclusion Complexes Between Cyclodextrinsand Aromatic Compounds 显示文摘 | Politi M J’Tran C D Gao G H | 1995 | J Phys Chem1995，99，14： | 1 |
| 6 | Entrepreneurs' At- titudes towards Failure: An Experiential Learning Approach显示文摘 | POLITIS D GABRIELSSON J | 2009 | International Journal of Entrepreneur- ial Behavior and Research2009，5，4： | 1 |
| 7 | Measuring spike train synchrony显示文摘 | Kreuz T Haas J S Morelli A Politi | 2007 | Neurosci Meth2007，165，： | 1 |
| 8 | Effects of vitamin E on mammary and blood leukocyte function, with emphasis on chemotoxis, in periparturient dairy cows 显示文摘 | Politis I Hidiroglou M White J H | 1996 | Am J Vet Res1996，57，： | 1 |
| 9 | Entrepreneurs' Attitudes towards Failure : an Experiential Learning Approach 显示文摘 | Politis D Gabrielsson J | 2009 | International Journal of Entrepreneurial Behavior and Research2009，5，4： | 1 |
| 10 | Entrepreneurs' attitudes towards failure: An experiential learning approach显示文摘 | Politis D Gabrielsson J | 2009 | International Journal of Entrepreneurial Behavior and Research2009，5，4： | 1 |
| 11 | Entrepreneurs' attitudes towards failure--An experiential learning approach显示文摘 | POLITIS D GABRIELSSON J | 2009 | International Journal of Entrepreneurial Behaviour Research2009，15，4： | 1 |
| 12 | Entrepreneurs atti- tudes towards failure: An experiential learning approach 显示文摘 | Politis D and Gabrielsson J | 2009 | International Journal of Entrepreneurial Behaviour and Re- search2009，5，4： | 1 |
| 13 | Enhancing the damping of wind turbine rotor blades, the DAMBLADE Project显示文摘 | Chaviaropoulos P K Politis E S Lekou D J | 2006 | Wind Energy2006，9，： | 1 |
| 14 | Screening of garlic water extract for binding activity with cholera toxin B pentamer by NMR spectroscopy-An old remedy giving a new surprise显示文摘 | Politi M Alvaro-Blanco J Groves P | | 0，，： | 1 |
| 15 | Factors associated with successful tracheal intubation of children with sevoflurane and no muscle relaxants 显示文摘 | Politis G D Frankland M J James R L | 2002 | Anesth Analg2002，95，3： | 1 |
| 16 | First metatarsal-phalangealO joint arthrodesis: a biomechanical assessment of stability 显示文摘 | Politi J Hayes J Njus G | 2003 | Foot Ankle Int2003，24，4： | 1 |
| 17 | Promotion of second intention wound healing by emu oil lotion:comparative results with furasin,polysporin,and corti sone显示文摘 | Politis M J Dmytrowich A | 1998 | Plast Reconstr Surg1998，102，7： | 1 |
| 18 | The Connection between Trust and Knowledge Management: What are its Implications for Team Performanee显示文摘 | Politis J D | 2003 | Journal of Knowledge Management2003，7，5： | 1 |
| 19 | Localized cell wall appositions: incompatibility response of tobacco leaf cells to Pseudomonas pisi显示文摘 | Politis D J Goodman R N | 1978 | Phytopathology1978，68，： | 1 |
| 20 | The stationary bootstrap显示文摘 | POLITIS D ROMAN J P | 1994 | Journal of American Statistical Association1994，89，： | 1 |
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