@article{jernigan_chanoit_veeramani_owen_hilliard_cormier_laffitte_buckner_2010, title={A laparoscopic knot-tying device for minimally invasive cardiac surgery}, volume={37}, number={3}, journal={European Journal of Cardio-Thoracic Surgery}, author={Jernigan, S. R. and Chanoit, G. and Veeramani, A. and Owen, S. B. and Hilliard, M. and Cormier, D. and Laffitte, B. and Buckner, G.}, year={2010}, pages={626–630} }
 @article{purser_richards_cook_osborne_cormier_buckner_2009, title={Evaluation of a Shape Memory Alloy Reinforced Annuloplasty Band for Minimally Invasive Mitral Valve Repair}, volume={88}, ISSN={["1552-6259"]}, DOI={10.1016/j.athoracsur.2009.04.133}, abstractNote={<h3>Purpose</h3> An in vitro study using explanted porcine hearts was conducted to evaluate a novel annuloplasty band, reinforced with a two-phase, shape memory alloy, designed specifically for minimally invasive mitral valve repair. <h3>Description</h3> In its rigid (austenitic) phase, this band provides the same mechanical properties as the commercial semi-rigid bands. In its compliant (martensitic) phase, this band is flexible enough to be introduced through an 8-mm trocar and is easily manipulated within the heart. <h3>Evaluation</h3> In its rigid phase, the prototype band displayed similar mechanical properties to commercially available semi-rigid rings. Dynamic flow testing demonstrated no statistical differences in the reduction of mitral valve regurgitation. In its flexible phase, the band was easily deployed through an 8-mm trocar, robotically manipulated and sutured into place. <h3>Conclusions</h3> Experimental results suggest that the shape memory alloy reinforced band could be a viable alternative to flexible and semi-rigid bands in minimally invasive mitral valve repair.}, number={4}, journal={ANNALS OF THORACIC SURGERY}, author={Purser, Molly F. and Richards, Andrew L. and Cook, Richard C. and Osborne, Jason A. and Cormier, Denis R. and Buckner, Gregory D.}, year={2009}, month={Oct}, pages={1312–1316} }
 @article{aman_west_cormier_2008, title={An evaluation of loose tenon joint strength}, volume={58}, number={3}, journal={Forest Products Journal}, author={Aman, R. L. and West, H. A. and Cormier, D. R.}, year={2008}, pages={61–64} }
 @inproceedings{purser_cormier_buckner_cook_bolotin_2008, title={Annuloplasty band with shape memory alloy stiffener}, booktitle={Medical Device Materials IV}, author={Purser, M. and Cormier, D. and Buckner, G. and Cook, R. and Bolotin, G.}, year={2008}, pages={231–236} }
 @article{cansizoglu_harrysson_west_cormier_mahale_2008, title={Applications of structural optimization in direct metal fabrication}, volume={14}, ISSN={["1355-2546"]}, DOI={10.1108/13552540810862082}, abstractNote={Purpose Optimization techniques can be used to design geometrically complex components with a wide variety of optimization criteria. However, such components have been very difficult and costly to produce. Layered fabrication technologies such as electron beam melting (EBM) open up new possibilities though. This paper seeks to investigate the integration of structural optimization and direct metal fabrication process. Design/methodology/approach Mesh structures were designed, and optimization problems were defined to improve structural performance. Finite element analysis code in conjunction with nonlinear optimization routines were used in MATLAB. Element data were extracted from an STL‐file, and output structures from the optimization routine were manufactured using an EBM machine. Original and optimized structures were tested and compared. Findings There were discrepancies between the performance of the theoretical structures and the physical EBM structures due to the layered fabrication approach. A scaling factor was developed to account for the effect of layering on the material properties. Practical implications Structural optimization can be used to improve the performance of a design, and direct fabrication technologies can be used to realise these structures. However, designers must realize that fabricated structures are not identical to idealized CAD structures, hence material properties much be adjusted accordingly. Originality/value Integration of structural optimization and direct metal fabrication was reported in the paper. It shows the process from design through manufacturing with integrated analysis.}, number={2}, journal={RAPID PROTOTYPING JOURNAL}, author={Cansizoglu, Omer and Harrysson, Ola L. A. and West, Harvey A., II and Cormier, Denis R. and Mahale, Tushar}, year={2008}, pages={114–122} }
 @article{harrysson_cansizoglu_marcellin-little_cormier_west_2008, title={Direct metal fabrication of titanium implants with tailored materials and mechanical properties using electron beam melting technology}, volume={28}, ISSN={["0928-4931"]}, DOI={10.1016/j.msec.2007.04.022}, abstractNote={The design of custom or tailored implant components has been the subject of research and development for decades. However, the economic feasibility of fabricating such components has proven to be a challenge. New direct metal fabrication technologies such as Electron Beam Melting (EBM) have opened up new possibilities. This paper discusses the design and fabrication of titanium implant components having tailored mechanical properties that mimic the stiffness of bone to reduce stress shielding and bone remodeling. Finite Element Analysis was used to design the tailored structures, and results were verified using mechanical testing.}, number={3}, journal={MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS}, author={Harrysson, Ola L. A. and CansiZoglu, Omer and Marcellin-Little, Denis J. and Cormier, Denis R. and West, Harvey A., II}, year={2008}, month={Apr}, pages={366–373} }
 @article{cansizoglu_harrysson_cormier_west_mahale_2008, title={Properties of Ti-6Al-4V non-stochastic lattice structures fabricated via electron beam melting}, volume={492}, ISSN={["0921-5093"]}, DOI={10.1016/j.msea.2008.04.002}, abstractNote={This paper addresses foams which are known as non-stochastic foams, lattice structures, or repeating open cell structure foams. The paper reports on preliminary research involving the design and fabrication of non-stochastic Ti–6Al–4V alloy structures using the electron beam melting (EBM) process. Non-stochastic structures of different cell sizes and densities were investigated. The structures were tested in compression and bending, and the results were compared to results from finite element analysis simulations. It was shown that the build angle and the build orientation affect the properties of the lattice structures. The average compressive strength of the lattice structures with a 10% relative density was 10 MPa, the flexural modulus was 200 MPa and the strength to density ration was 17. All the specimens were fabricated on the EBM A2 machine using a melt speed of 180 mm/s and a beam current of 2 mA. Future applications and FEA modeling were discussed in the paper.}, number={1-2}, journal={MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING}, author={Cansizoglu, O. and Harrysson, O. and Cormier, D. and West, H. and Mahale, T.}, year={2008}, month={Sep}, pages={468–474} }
 @book{walsh_cormier_2006, title={McGraw-Hill machining and metalworking handbook (3rd ed.)}, ISBN={0071457879}, publisher={New York: McGraw-Hill}, author={Walsh, R. A. and Cormier, D. R.}, year={2006} }
 @article{cormier_harrysson_west_2004, title={Characterization of H13 steel produced via electron beam melting}, volume={10}, ISSN={["1355-2546"]}, DOI={10.1108/13552540410512516}, abstractNote={Electron beam melting (EBM) is a direct‐metal freeform fabrication technique in which a 4 kW electron beam is used to melt metal powder in a layer‐wise fashion. As this process is relatively new, there have not yet been any independently published studies on the H13 steel microstructural properties. This paper describes the EBM process and presents results of microstructural analyses on H13 tool steel processed via EBM.}, number={1}, journal={RAPID PROTOTYPING JOURNAL}, author={Cormier, D and Harrysson, A and West, H}, year={2004}, pages={35–41} }
 @article{zozom_hodgson_king_weintraub_cormier_2003, title={Integrated job release and shop-floor scheduling to minimize WIP and meet due-dates}, volume={41}, ISSN={["1366-588X"]}, DOI={10.1080/00207540210162992}, abstractNote={We address the problem of releasing jobs to the factory floor while meeting delivery dates and minimizing the work-in-process inventory. Heuristic algorithms were developed that used an efficient, detailed shop-floor scheduling model to determine the release times of new jobs. The process starts with the current shop floor conditions and determines the sequencing of both in-process and new jobs on machines in order to minimize the maximum lateness (L max ). The approach is tractable for industrial-sized problems and provides solutions close to a calculated lower bound for WIP. Computational experience is given.}, number={1}, journal={INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH}, author={Zozom, A and Hodgson, TJ and King, RE and Weintraub, AJ and Cormier, D}, year={2003}, pages={31–45} }
 @article{harrysson_cormier_marcellin-little_jajal_2003, title={Rapid prototyping for treatment of canine limb deformities}, volume={9}, ISSN={["1355-2546"]}, DOI={10.1108/13552540310455647}, abstractNote={This report describes Rapid Prototyping (RP) ‐aided assessment and preoperative planning for treatment of bilateral multifocal pelvic limb deformities in a 1 year old German Shepherd dog. Computed tomography (CT) scans were acquired on a General Electric CT scanner and converted to solid models using Mimics software from Materialise. Stereolithography patterns were prototyped using QuickCast build style on a SLA ‐190. Room temperature vulcanized silicone molds were constructed and three sets of polyurethane patterns were cast for pre‐surgical planning and rehearsal. The paper compares traditional osteotomy planning procedures using only radiographs and 2D CT images to planning with full‐scale physical biomodels. The biomodels had a clearly beneficial impact on the accuracy of surgery and positively influenced the clinical outcome.}, number={1}, journal={RAPID PROTOTYPING JOURNAL}, author={Harrysson, OLA and Cormier, DR and Marcellin-Little, DJ and Jajal, K}, year={2003}, pages={37–42} }
 @article{cormier_taylor_2001, title={A process for solvent welded rapid prototype tooling}, volume={17}, number={1-2}, journal={Robotics and Computer-Integrated Manufacturing}, author={Cormier, D. and Taylor, J.}, year={2001}, pages={151–157} }
 @article{taylor_cormier_joshi_venkataraman_2001, title={Contoured edge slice generation in rapid prototyping via 5-axis machining}, volume={17}, number={1-2}, journal={Robotics and Computer-Integrated Manufacturing}, author={Taylor, J. B. and Cormier, D. R. and Joshi, S. and Venkataraman, V.}, year={2001}, pages={13–18} }
 @misc{cormier_taylor_west_2001, title={Methods and apparatus for rapidly prototyping three-dimensional objects from a plurality of layers}, volume={6,324,438}, number={2001 Nov. 27}, publisher={Washington, DC: U.S. Patent and Trademark Office}, author={Cormier, D. R. and Taylor, J. B. and West, Harvey A., II}, year={2001} }
 @article{cormier_unnanon_2000, title={Virtual interference detection with case goods assemblies}, volume={50}, number={5}, journal={Forest Products Journal}, author={Cormier, D. and Unnanon, K.}, year={2000}, pages={75–78} }
 @article{weintraub_cormier_hodgson_king_wilson_zozom_1999, title={Scheduling with alternatives: a link between process planning and scheduling}, volume={31}, DOI={10.1080/07408179908969910}, abstractNote={The objective of this research is to develop and evaluate effective, computationally efficient procedures for scheduling jobs in a large-scale manufacturing system involving, for example, over 1000 jobs and over 100 machines. The main performance measure is maximum lateness; and a useful lower bound on maximum lateness is derived from a relaxed scheduling problem in which preemption of jobs is based on the latest finish time of each job at each machine. To construct a production schedule that minimizes maximum lateness, an iterative simulation-based scheduling algorithm operates as follows: (a) job queuing times observed at each machine in the previous simulation iteration are used to compute a refined estimate of the effective due date (slack) for each job at each machine; and (b) in the current simulation iteration, jobs are dispatched at each machine in order of increasing slack. Iterations of the scheduling algorithm terminate when the lower bound on maximum lateness is achieved or the iteration limit is reached. This scheduling algorithm is implemented in Virtual Factory, a Windows-based software package. The performance of Virtual Factory is demonstrated in a suite of randomly generated test problems as well as in a large furniture manufacturing facility. To further reduce maximum lateness, a second scheduling algorithm also incorporates a tabu search procedure that identifies process plans with alternative operations and routings for jobs. This enhancement yields improved schedules that minimize manufacturing costs while satisfying job due dates. An extensive experimental performance evaluation indicates that in a broad range of industrial settings, the second scheduling algorithm can rapidly identify optimal or nearly optimal schedules.}, number={11}, journal={IIE Transactions}, author={Weintraub, A. and Cormier, D. and Hodgson, Thom and King, R. and Wilson, J. and Zozom, A.}, year={1999}, pages={1093–1102} }
 @article{cormier_p o'grady_sanii_1998, title={A constraint-based genetic algorithm for concurrent engineering}, volume={36}, ISSN={["0020-7543"]}, DOI={10.1080/002075498193228}, abstractNote={Concurrent engineering is a complex problem in that a large number of considerations have to be brought to bear during the design stage. Compounding this complexity is that concurrent engineering problems are also likely to encompass both numeric and symbolic variables, and constraints that range from simple algebraic constraints, through conditional constraints, to potentially very complex database constraints. Previous approaches have concentrated on finding good solutions to simplified problems or, alternatively, to finding a feasible solution which may not be close to optimal. This paper presents an approach to concurrent engineering problems that extends the conventional genetic algorithm approach to handle the complex variety of variables and constraints that are inherent in a typical concurrent engineering problem. This poses some severe research challenges and this paper describes three genetic operators (the constraint-based initialization, crossover, and mutation operators) that preserve feasibi...}, number={6}, journal={INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH}, author={Cormier, D and P O'Grady and Sanii, E}, year={1998}, month={Jun}, pages={1679–1697} }
 @article{hodgson_cormier_weintraub_zozom_1998, title={Note. Satisfying due dates in large job shops}, volume={44}, ISSN={["0025-1909"]}, DOI={10.1287/mnsc.44.10.1442}, abstractNote={For the multi-machine job shop scheduling problem, a conceptually simple simulation-based procedure (first proposed by Lawrence and Morton 1986) is shown to be both effective and efficient in providing optimal, or near optimal, schedules for minimizing the maximum lateness, L max . Computational experimentation is used to identify the conditions under which the approach is most viable.}, number={10}, journal={MANAGEMENT SCIENCE}, author={Hodgson, TJ and Cormier, D and Weintraub, AJ and Zozom, A}, year={1998}, month={Oct}, pages={1442–1446} }