Using laser scanning for non-destructive quality control of parts manufactured using 3D printing technology

2021 ◽  
pp. 20-28
Author(s):  
A.P. Voroshilin ◽  
◽  
V.N. Rozhkov ◽  
P.A. Ukhov ◽  
◽  
...  
Keyword(s):  
Quality Control ◽  
3D Printing ◽  
Laser Scanning ◽  
Ventilation System ◽  
Implementation Process ◽  
3D Models ◽  
Additive Technologies ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Non Destructive

The article identifies promising areas of application of additive technologies in the production of parts and elements of aviation equipment (AT), the main tasks that need to be solved when implementing them (during the implementation process). The features of the application of laser scanning for non-destructive quality control of aircraft parts manufactured using modern additive technologies are considered. The possibility of controlling deviations in the shape and size of parts of aircraft manufactured using 3D printing technology from their 3D models by stationary and portable scanners (for example, an adapter for the air conditioning and ventilation system of an aircraft) is shown.(is represented) The article presents the main operations of the technological process of laser scanning using modern technical and software tools, the process of laser scanning of the AT part using the FARO Arm mobile CMM is implemented.

scholarly journals EQUAL PROPORTION REPRODUCTION METHOD OF GROTTO BASED ON POINT CLOUD

2019 ◽  
Vol XLII-2/W15 ◽  
pp. 1215-1219
Author(s):  
P. Wei ◽  
A. Li ◽  
M. Hou ◽  
L. Zhu ◽  
D. Xu ◽  
...  
Keyword(s):  
3D Printing ◽  
Point Cloud ◽  
Laser Scanning ◽  
New Technologies ◽  
Rapid Development ◽  
Point Clouds ◽  
Equal Proportion ◽  
3D Laser Scanning ◽  
Printing Technology ◽  
3D Printing Technology

<p><strong>Abstract.</strong> The rapid development of 3D laser scanning and 3D printing technology provides new technologies and ideas for cultural relic protection and reproduction. Aiming at the requirement of equal proportional reproduction of large-scale grottoes, this paper takes the point cloud data of the 18th Cave of Yungang Grottoes obtained by 3D laser scanning as an example, and proposes a data processing and reproduction block partitioning method for equal proportion reproduction. The Cyclone, Geomagic and AutoCAD software were used to construct the 3D model of the grotto, and the 3D printing technology was used to realize the secondary design and model print. Among them, the research focuses on the modeling of massive point clouds and the method of model partitioning based on voxels. It can meet the requirements of movable and assembly while realizing the equal proportional reproduction of the whole grotto. The research results and application can be a good reference for the future grotto reproduction work.</p>

scholarly journals Comparing the Effectiveness of 3D Printing Technology in the Treatment of Clavicular Fracture between Surgeons with Different Experiences

2021 ◽  
Author(s):  
Jiang long Guo ◽  
Hong yi Li ◽  
Kui Zhao ◽  
Meng Zhang ◽  
Jing zhi Ye ◽  
...  
Keyword(s):  
3D Printing ◽  
Standard Dose ◽  
Operation Time ◽  
3D Models ◽  
P Value ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Value Range ◽  
Group A ◽  
Group B

Abstract Purpose To comparethe effectiveness of the three-dimensional (3D) printing technology in the treatment of clavicularfracturebetween experienced and inexperienced orthopedic surgeons. Methods A total of 80 patients with clavicle fracture (from February 2017 to May 2021)were enrolled in our study. Patients were divided randomly into four groups: group A: Patients underwent low-dose CT scan and 3D models were printed before surgeries performed by inexperienced surgeons; group B: Standard-dose CT were taken and 3D models were printed before surgeries performed by experienced surgeons; group C and D: Standard-dose CT were taken in both groups, and the operations were performed differently by inexperienced (group C) and experienced (group D) surgeons. Operation time, blood loss, length of incision and number of intraoperative fluoroscopy were recorded. Results No statistically significant differences were found in age, gender, fracture site and fracture type (P value: 0.23–0.88).Group A showed shorter incision length and less intraoperative fluoroscopy times than group C and D (P value < 0.05). There were no significant differences in blood loss volume, incision length and number of intraoperative time between group A and group B (P value range: 0.11–0.28). The operation time of group A was no longer than that of group C and D (P value range: 0.11 and 0.24). Conclusion The surgical effectiveness of inexperienced surgeons who applied 3D printing technology before clavicular fracture operation were better than those of both inexperienced and experienced surgeons did not use preoperative 3D printing technology.

scholarly journals Using additive technologies to create broadband antennas with fractal geometry

2021 ◽  
Vol 13 (4) ◽  
pp. 427-434
Author(s):  
Andrey V. Smirnov ◽  
◽  
Alexander S. Fionov ◽  
Ilia A. Gorbachev ◽  
Elizaveta S. Shamsutdinova ◽  
...  
Keyword(s):  
3D Printing ◽  
Frequency Dependence ◽  
Fractal Geometry ◽  
Additive Technologies ◽  
Copper Coating ◽  
Frequency Range ◽  
Resonant Frequencies ◽  
Printing Technology ◽  
Broadband Antennas ◽  
3D Printing Technology

The paper presents the results of a study of the frequency dependence of the S11 parameters of antenna samples with fractal geometry, created using 3D printing technology, followed by the deposition of a conductive copper coating by galvanization. It is shown that changing the dimension of the fractal at different iterations, shifting and dividing the resonant frequencies, it is possible to flexibly form the working bands of antennas in any frequency range and any width. The developed designs can be used to create broadband rectennas.

scholarly journals 3D PRINTING IN PEDIATRIC ORTHOPEDICS – THE NEW GENERATION OF PREOPERATIVE PLANNING IN THE FIELD OF PEDIATRIC ORTHOPEDICS

2020 ◽  
Vol 7 (3) ◽  
pp. 85-92
Author(s):  
Eduard Liciu ◽  
Maria Miruna Mihai ◽  
Ștefana Carp ◽  
Laura Popa ◽  
Camelia Vreme ◽  
...  
Keyword(s):  
3D Printing ◽  
Maxillofacial Surgery ◽  
3D Models ◽  
Modern Medicine ◽  
Pediatric Orthopedics ◽  
Printing Technology ◽  
Medical Specialties ◽  
3D Printing Technology ◽  
Post Surgery ◽  
New Diagnosis

The evolution of modern medicine, in its continuous developing process, is highly connected with the progress achieved in the medical branch of technology. Regarding the surgical specialties, the technological progress breakthroughs may determine the appearance of new diagnosis techniques, but also shape innovative treatments, leading to superior therapeutic results. In the surgical treatment as a whole, an essential role is played by the Medical Imagistics. They either offer the much-needed visual support in order to reach an accurate diagnosis, or guide the surgeon in choosing a certain type of intervention. The importance of Imagistics is indisputable. It has also been proven so in intraoperatory guidance and monitoring the patient in post-surgery. In the evolution of medical Imagistics, after the transition to digital imaging, followed by graphic 3D reconstructions based on CT and MRI data, we find ourselves contemporary with a new turning point announcing a technological revolution: the transition from virtual 3D models to tangible 3D replica. Since the beginning, the 3D printing technology has been of great importance to the field of medical research and, once the technique gained popularity, it became a modern tool for many medical specialties, in particular for cranio-maxillofacial surgery, orthopedics, oncology, neurosurgery. The 3D printing technology managed to transgress dated barriers by facilitating the manufacturing of implants or implement new treatments in regenerative medicine. The purpose of this original paper is to present our 3D printing work protocol and general conclusions after 5 years of implementing 3D printing in pediatric orthopedics.  

scholarly journals Case Study on Geoscience Teaching Innovation: Using 3D Printing to Develop Structural Interpretation Skill in Higher Education Levels

2021 ◽  
Vol 8 ◽  
Author(s):  
Piyaphong Chenrai
Keyword(s):  
3D Printing ◽  
Teaching Method ◽  
Science Classroom ◽  
Educational Innovation ◽  
3D Models ◽  
Project Based Learning ◽  
Printing Technology ◽  
Structural Interpretation ◽  
3D Printing Technology ◽  
Interpretation Skill

Applying three-dimensional (3D) printing technology to a geoscience classroom provides an alternative way to teach students. This brief report describes an educational innovation for the geoscience classroom by 3D printing technology to develop structural interpretation skill in high education level in Thailand. In comparison to traditional classrooms, this teaching method enables students to more easily comprehend how geological structures and features occur in nature through a project-based learning in seismic interpretation course. 3D printing models are constructed based on student interpretation through three different software packages. The observations in this study indicate that the ability to create the 3D models based on digital seismic data can enhance structural interpretation skill of students. The benefit of freely orientating and viewing in different angles of the 3D models leads to a construction of cognitive abstract space and spatial visualization ability. Therefore, 3D printing technology plays an important role in changing and developing the geoscience education system in Thailand at present and in the future. This teaching method could potentially benefit any science classroom and have applications in other disciplines requiring similar skill.

scholarly journals The Feasibility of 3D Printing Technology on the Treatment of Pilon Fracture and Its Effect on Doctor-Patient Communication

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Wenhao Zheng ◽  
Chunhui Chen ◽  
Chuanxu Zhang ◽  
Zhenyu Tao ◽  
Leyi Cai
Keyword(s):  
3D Printing ◽  
Blood Loss ◽  
Operation Time ◽  
3D Models ◽  
Conventional Group ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Anatomic Reduction ◽  
Significant Difference ◽  
Pilon Fractures

Purpose. The aim of this study was to assess the feasibility and effectiveness of the three-dimensional (3D) printing technology in the treatment of Pilon fractures. Methods. 100 patients with Pilon fractures from March 2013 to December 2016 were enrolled in our study. They were divided randomly into 3D printing group (n=50) and conventional group (n=50). The 3D models were used to simulate the surgery and carry out the surgery according to plan in 3D printing group. Operation time, blood loss, fluoroscopy times, fracture union time, and fracture reduction as well as functional outcomes including VAS and AOFAS score and complications were recorded. To examine the feasibility of this approach, we invited surgeons and patients to complete questionnaires. Results. 3D printing group showed significantly shorter operation time, less blood loss volume and fluoroscopy times, higher rate of anatomic reduction and rate of excellent and good outcome than conventional group (P<0.001, P<0.001, P<0.001, P=0.040, and P=0.029, resp.). However, no significant difference was observed in complications between the two groups (P=0.510). Furthermore, the questionnaire suggested that both surgeons and patients got high scores of overall satisfaction with the use of 3D printing models. Conclusion. Our study indicated that the use of 3D printing technology to treat Pilon fractures in clinical practice is feasible.

scholarly journals Involving patients, families and medical staff in the evaluation of 3D printing models of congenital heart disease

2016 ◽  
Vol 12 (2-3) ◽  
Author(s):  
Giovanni Biglino ◽  
Claudio Capelli ◽  
Lindsay-Kay Leaver ◽  
Silvia Schievano ◽  
Andrew M. Taylor ◽  
...  
Keyword(s):  
Congenital Heart Disease ◽  
Heart Disease ◽  
3D Printing ◽  
Congenital Heart ◽  
Patient Empowerment ◽  
3D Models ◽  
Patient Specific ◽  
Printing Technology ◽  
Training Tool ◽  
3D Printing Technology

Objective: To evaluate the usefulness of 3D printing patient-specific models of congenital heart disease (CHD) from the perspective of different stakeholders potentially benefiting from the technology (patients, parents, clinicians and nurses). Methods: Workshops, focus groups and teaching sessions were organized, each targeting a different group of stakeholders. Sessions involved displaying and discussing different 3D models of CHD. Model evaluation involved questionnaires, audio-recorded discussions and written feedback. Results: All stakeholders expressed a liking for the 3D models and for the patient-specific quality of such models. Patients indicated that 3D models can help them imagine “what’s going on inside” and parents agreed that these tools can spark curiosity in the young people. Clinicians indicated that teaching might be the most relevant application of such novel technology and nurses agreed that 3D models improved their learning experience during a course focused on CHD. Conclusion: The successful engagement of different stakeholders to evaluate 3D printing technology for CHD identified different priorities, highlighting the importance of eliciting the views of different groups. Practice Implications: A PPI-based approach in the evaluation and translation of 3D printing technology may increase patient empowerment, improve patient-doctor communication and provide better access to a new teaching and training tool.

scholarly journals Experience in Use of 3D Printing in Engineering Education at University of Stavanger

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Hirpa G. Lemu ◽  
Ove Mikkelsen
Keyword(s):  
3D Printing ◽  
Global Economy ◽  
3D Model ◽  
Manufacturing Sector ◽  
3D Models ◽  
3D Modelling ◽  
Printing Technology ◽  
3D Print ◽  
3D Printing Technology ◽  
3D Printed

This article is based on a project run in 2018 and 2019 entitled “Educating Mechanical Engineering using 3D Printing – Under3DP”. The project was funded by Faculty of Science and Technology, University of Stavanger (UiS). The project is motivated by the current developments of the 3D printing technology in diverse disciplines whose initial inception was for rapid prototyping that can transform 3D models in computers to physical objects that the designer and/or the customer can touch, feel and better comprehend. Being one of the enablers of the digital transformations in manufacturing, the 3D printing technology is the fastest growing technologies and it is bringing more and more significant impacts to the manufacturing sector, healthcare, daily life, and the global economy. The pedagogical benefit of the project was evaluated using questionnaire based survey after the students of a course in Product Development and 3D Modelling have executed a mandatory group exercise to make 3D models of 3D printed samples and 3D print some of their 3D model ideas. According to the assessment results, more than 80% of the students who participated in the assessment responded that use of 3D fabricated parts in product design tasks have contributed to better understanding of the task and 3D printing has supported the learning process.

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