Investigation of complex surfaces of propellers of vehicles by a mechatronic profilograph

2021 ◽  
Vol 23 (4) ◽  
pp. 65-78
Author(s):  
Sergey Vasiliev ◽  
◽  
Viktor Alekseev ◽  
Alyona Fedorova ◽  
Dmitry Lobanov ◽  
...  
Keyword(s):  
Reverse Engineering ◽  
New Technology ◽  
Angular Rate ◽  
Innovative Technology ◽  
Sufficient Information ◽  
Laser Sensor ◽  
Complex Surfaces ◽  
Technological Parameters ◽  
Constant Pitch ◽  
Angle Of Deviation

Introduction. The technology of investigation of screw propellers complex surfaces, which include the marine and aircraft propellers of vehicles, mechatronic profilers for the implementation of reverse engineering, is considered. A review of the scientific literature shows that at present the problem of monitoring complex surfaces of products at various stages of its life cycle requires further research, since the use of available devices and methods does not always provide the necessary accuracy, technological effectiveness and sufficient information on measurements. The purpose of the work is to develop a new technology for studying complex surfaces of propellers, which include marine and aircraft propellers of vehicles by means of a mechatronic profilograph to implement reverse engineering. Methods. The paper considers the implementation of the innovative technology for studying complex surfaces of propellers using the developed mechatronic profilograph. This ingenious mechatronic profilograph is designed to measure the profile and study the shape of complex surfaces of various products, as well as to determine the geometric and morphological parameters of these surfaces. On the basis of theoretical studies the main design and technological parameters are found and the hyperbolic dependence of the angular rate of the laser sensor movement on the scanning radius is determined for the developed mechatronic profilograph. For example, if a constant pitch of the trajectory along the Archimedes spiral is 2 mm, the value of the sensor angular rate should gradually decrease from the maximum value of 2 rad/s to the minimum value of 0.574 rad/s, i.e. by 3.484 times. Results and discussion. It is revealed that the use of cylindrical coordinates for processing the obtained data by a profilograph is logical and has a number of advantages. An express analysis of the propeller surfaces with rotary symmetry is carried out and differences in the shapes of the surfaces of the propeller blades by deviation values in the longitudinal and transverse directions for different radii are established. On the basis of the experimental data, a two-factor power model describing deviations with a determination coefficient of 0.967 is obtained, according to its analysis, it is clear that on average the angle of deviation in the perpendicular direction to the radius  - increases from 0 to 0.3, and the angle of deviation along the radius  increases from 0 to 5.4.

Awareness Analysis of Smart Car Parking System in Heterogeneous High Density Clusters

2017 ◽  
Vol DC CPS 2017 (01) ◽  
pp. 22-26 ◽  
Author(s):  
Elsie Chidinma Anderson ◽  
A. A. Obayi ◽  
K.C. Okafor
Keyword(s):  
Traffic Congestion ◽  
Urban Population ◽  
New Technology ◽  
Innovative Technology ◽  
Survey Analysis ◽  
Metropolitan Cities ◽  
Port Harcourt ◽  
Parking System ◽  
Statistical Survey ◽  
Co Emission

The swiftly growing urban population of Nigeria is generating lots of tension in the cities in line with the rapid increase of vehicles. This is due to hitherto reliance on the present parking system which has no standard to check for parking spaces, hence generating problems such as traffic congestion, time wastage in search of parking slot, fuel consumption/CO emission, insecurity of vehicles etc. This work presents a quantitative statistical survey analysis conducted in selected metropolitan cities in Port Harcourt, Nigeria. The aim is to create awareness on Smart Car Parking System (SCPS) for heterogeneous clustered environments. The results of the conducted analysis showed that the awareness of this innovative technology is still at its tender stage in Nigeria. Findings shows that people are willing to adopt this new technology to assist in overcoming the challenges faced in the present parking system that is unstructured. A brief description of proposed SCPS based on Big data hardware is presented.

A new approach for pre-stressing of rail-end-bolt holes

2016 ◽  
Vol 231 (12) ◽  
pp. 2275-2283 ◽  
Author(s):  
JT Maximov ◽  
GV Duncheva ◽  
IM Amudjev ◽  
AP Anchev ◽  
N Ganev
Keyword(s):  
Fatigue Life ◽  
Fatigue Cracks ◽  
New Technology ◽  
Innovative Technology ◽  
Bolted Joint ◽  
Compressive Stresses ◽  
Process Formation ◽  
Technology Process ◽  
Bolt Holes ◽  
Hoop Stresses

Bolted joint railroad is the subject matter of this paper. Rail joint elements are subjected to cyclic and impact loads as a result of the passage of trains, which causes the origination and growth of fatigue cracks occurring, in most cases, around the bolt holes. Fatigue failure around rail-end-bolt holes is particularly dangerous because it leads to derailment of trains and, consequently, to inevitable accidents. Moreover, the cracking at rail-ends, which starts from bolt hole surface, causes premature rails replacement. The presence of residual compressive hoop stresses around the bolted holes, which is achieved by prestressing of these holes, extends the fatigue life of bolted joint railroads. This article presents an innovative technology for pre-stressing of rail-end-bolt holes, implemented on a vertical machining centre of Revolver vertical (RV) type. Two consecutive operations are involved in the manufacturing technology process: formation of the hole by drilling, reaming and making of a chamfer through a new combined cutting tool; cold hole working by spherical motion cold working through a new tool equipment, which minimizes the axial force on the reverse stroke. The new technology introduces beneficial residual compressive stresses around the bolted holes thereby preventing the fatigue cracks growth and increasing the fatigue life of these openings.

Unlocking the Potential: Understanding the Psychological Factors That Influence Technology Adoption in the Upstream Oil and Gas Industry

SPE Journal ◽  
2019 ◽  
Vol 25 (01) ◽  
pp. 515-528
Author(s):  
Ruby Roberts ◽  
Rhona Flin
Keyword(s):  
Technology Adoption ◽  
Psychological Factors ◽  
Oil And Gas ◽  
New Technologies ◽  
New Technology ◽  
Oil And Gas Industry ◽  
Research Area ◽  
Organizational Level ◽  
Innovative Technology ◽  
Future Research

Summary To maximize the opportunities for the adoption of newly developed products, there is a need to better understand how psychological factors have an impact on the acceptance and deployment of innovative technology in industry. While there is extensive general literature on the psychological factors that influence consumer behavior and the use of new technologies, there seemed to be very limited understanding of this topic, specifically relating to the upstream energy sector. A literature review was conducted to (1) identify what, if any, research has been conducted in relation to the psychological factors influencing technology adoption and deployment in the oil and gas (O&G) industry and (2) identify what interventions have been developed to support technology adoption in O&G. A literature search was undertaken, and given the limited research anticipated, minimum selection criteria were applied on the basis of Cochrane quality control (Higgins and Green 2011). In the 17 articles that met the search criteria, there was limited discussion of the psychological factors that have an impact on O&G technology adoption. The articles were subject to Braun and Clarke (2006) thematic analysis, producing a list of psychological factors that influence technology adoption in O&G. Only five psychological factors were identified: personality (e.g., exploration traits and risk aversion), attitude (e.g., trust and not-invented-here syndrome), social (e.g., social norms), cognition (e.g., risk perception), and psychological factors at an organizational level (leadership and organizational culture). In addition, our review identified a small number of interventions that were developed and deployed to support technology adoption in O&G. Given the early stages of this research area, combined with the relevance for technology innovation in upstream O&G, our review adds to the literature by identifying an initial framework of the key psychological factors. This essential set of factors can be used to direct future research, as well as to support effective interventions aimed at supporting the introduction of new technology.

scholarly journals Social transformations of speech culture in information age

2019 ◽  
Vol 135 ◽  
pp. 03081 ◽  
Author(s):  
Artur Gudmanian ◽  
Liubov Drotianko ◽  
Sergiy Sydorenko ◽  
Oksana Zhuravliova ◽  
Sergiy Yahodzinskyi
Keyword(s):  
Interpersonal Communication ◽  
Social Relations ◽  
New Technology ◽  
Information Age ◽  
Modern Society ◽  
Global Scale ◽  
Innovative Technology ◽  
Modern World ◽  
The Internet ◽  
Human Communication

The paper looks at the major technological, sociocultural and linguistic factors that are changing the nature of interpersonal communication in the Information Age, and some manifestations of these changes. Rapid progress of technology, above all, the advent of the Internet, brought about dramatic changes in the modes and parameters of human communication over the recent decades. New types of written communication arose and have firmly established themselves on the global scale – in social networks, chats, blogs, forums and various Internet communities. Having created unprecedented possibilities for connecting with people irrespective of their location, age or social status, innovative technology is at the same time challenging standards of communication ethics and speech culture. Sociocultural transformations in the modern society, democratization of social relations contribute to weakening of speech norms and deterioration of overall speech culture, especially among young people. The increasing role of English as a language of global communication and its reputation of the dominant language of new technology and virtual reality are inevitably influencing speech habits of the Internet users across the globe. The combined work of all these factors results in visible deterioration of speech culture, standardization and simplification of speech, elimination of cultural specificity, tendency to replace expressive language means with emoji, downgrading of style, defying norms of spelling, word use and grammar. Obvious irreversibility of technological progress and the growing share of life people spend online call on specialists from various related fields to continue comprehensive analysis of transformations of speech culture in the modern world with the aim to assess societal risks and work out timely and adequate countermeasures.

Side Mill Tool Profiling for Generation of Helical Surfaces Determined by Reverse Engineering

2014 ◽  
Vol 657 ◽  
pp. 28-32
Author(s):  
Camelia Popa ◽  
Virgil Gabriel Teodor ◽  
Nicuşor Baroiu ◽  
Nicolae Oancea
Keyword(s):  
Reverse Engineering ◽  
Cutting Tool ◽  
Special Problem ◽  
Helical Surface ◽  
Surface Type ◽  
Axial Section ◽  
Compressor Rotor ◽  
Constant Pitch ◽  
Measuring Machine

The compressor rotors usually are helical surfaces with constant pitch and are composed crossing profiles. Frequently, for repair operations occurs the reconstruction necessity for one or both of the worms, drive and driven, from the helical compressors gear. The helical composed surface of rotor flank is generated usually with side mill. The knowledge of worm shape can not be made from geometrical conditions. In these conditions it is necessary to determine the flank form by actual measuring the crossing profiles of these parts. So, the theoretical helical surface of the worm is being substituted by an assembly of helical lines which together with crossing profiles forms points cloud resulted from measuring leads to a polyhedral expression of the flank rotor. Numerically, this surface type is expressed by a coordinate array which shows its discrete image. The profiling of cutting tool bounded by a revolution surface reciprocally enveloping with the substitutive surface of the helical one represents a special problem. In this paper is proposed an algorithm for polyhedral expression of the helical surface previously determined by reverse engineering methods and an algorithm for the determination of the specific enveloping condition at contact with a discrete surface.It is presented an example for a compressor rotor measured on a 3D measuring machine, the algorithm for the transformation of the gathered points cloud in a surface with polyhedral expression. Given these conditions there were determined the enveloping condition and the axial section of the side mill.

Direct Chill Casting of CLAD Ingot

2006 ◽  
Vol 519-521 ◽  
pp. 1809-1814 ◽  
Author(s):  
Robert B. Wagstaff ◽  
David J. Lloyd ◽  
Todd F. Bischoff
Keyword(s):  
New Technology ◽  
High Strength ◽  
Direct Chill ◽  
Innovative Technology ◽  
Monolithic Material ◽  
Roll Bonding ◽  
Free Zone ◽  
New Family ◽  
Clad Sheet ◽  
Mechanical And Physical Properties

Novelis Inc. recently released its first new innovative technology which opens new opportunities in the clad aluminum product marketplace, where a combination of mechanical and physical properties can be obtained which are superior to the monolithic material alone. Clad aerospace and brazing products are well known commercial products which are provided by commercial roll bonding processes, but which can now be produced with the new Novelis technology. This paper discusses the new technology, e.g., the casting, fabrication, the properties of clad sheet are reported and it is established that the clad-core interface is comprised of a high strength, oxide free zone. This technology enables a new family of clad products with clad/core combinations which cannot be produced by the conventional roll bonding process.

Effect of Technological Parameters on Preparation of Mg-Based Foam Materials

2013 ◽  
Vol 749 ◽  
pp. 356-360 ◽  
Author(s):  
Hong Jie Luo ◽  
Li Zhang ◽  
Zheng Guo Xu ◽  
Yuan Sheng Yang
Keyword(s):  
Large Scale ◽  
New Technology ◽  
High Specific Surface Area ◽  
Foam Material ◽  
Technological Parameters ◽  
Specific Strength ◽  
Stirring Time ◽  
Novel Material ◽  
Suitable Combination ◽  
Strength And Stiffness

As a novel material, Mg-based foam material not only has fantastic physical characteristics, such as low density, high specific surface area, high specific strength and stiffness, and good biocompatibility, but also has special functional properties, for example, electromagnetic wave shielding, vibration reduction, sound absorption, and so on. It can be widely applied to aeronautical and aerospace, military, shipbuilding, transportation, automotive and medical industries. Mg-based foam material was prepared by direct foaming in magnesium alloy liquid in this study, and the effect of technological parameters on the products, such as addition amount of and granularity of SiC particles and MgCO3 particles, stirring temperature, stirring time, stirring velocity, foaming temperature and foaming time, was investigated. The aim of this research was to develop a new technology which could fabricate large scale Mg-based foam material in air condition. The results showed that variations of technological parameters may affect preparation of the foam materials in some extent and resulted in the changes of the products in apparent density, porosity and structural uniformity. The light weight Mg-based foam with homogeneous pores could be obtained by suitable combination of the technological parameters.

scholarly journals Patient, Caregiver, and Decliner Perspectives on Whether to Enroll in Adaptive Deep Brain Stimulation Research

2021 ◽  
Vol 15 ◽  
Author(s):  
Simon Outram ◽  
Katrina A. Muñoz ◽  
Kristin Kostick-Quenet ◽  
Clarissa E. Sanchez ◽  
Lavina Kalwani ◽  
...  
Keyword(s):  
Deep Brain Stimulation ◽  
Study Design ◽  
Brain Stimulation ◽  
Research Study ◽  
New Technology ◽  
Innovative Technology ◽  
Theoretical Perspectives ◽  
Potential Risks ◽  
Deep Brain

This research study provides patient and caregiver perspectives as to whether or not to undergo adaptive deep brain stimulation (aDBS) research. A total of 51 interviews were conducted in a multi-site study including patients undergoing aDBS and their respective caregivers along with persons declining aDBS. Reasons highlighted for undergoing aDBS included hopes for symptom alleviation, declining quality of life, desirability of being in research, and altruism. The primary reasons for not undergoing aDBS issues were practical rather than specific to aDBS technology, although some persons highlighted a desire to not be the first to trial the new technology. These themes are discussed in the context of “push” factors wherein any form of surgical intervention is preferable to none and “pull” factors wherein opportunities to contribute to science combine with hopes and/or expectations for the alleviation of symptoms. We highlight the significance of study design in decision making. aDBS is an innovative technology and not a completely new technology. Many participants expressed value in being part of research as an important consideration. We suggest that there are important implications when comparing patient perspectives vs. theoretical perspectives on the choice for or against aDBS. Additionally, it will be important how we communicate with patients especially in reference to the complexity of study design. Ultimately, this study reveals that there are benefits and potential risks when choosing a research study that involves implantation of a medical device.

Safety Policy as a Tool in New Technology Offering: A Flow Assurance Case

2006 ◽  
Author(s):  
Bertrand Munier ◽  
Pierre Besse ◽  
Marc Lassagne
Keyword(s):  
New Technologies ◽  
Risk Model ◽  
New Technology ◽  
Innovative Technology ◽  
Flow Assurance ◽  
Industrial Management ◽  
Novel Technology ◽  
Management Techniques ◽  
The Right ◽  
Risk Managers

Flow Assurance technologies are currently experiencing steady progress. Most new technologies are in many ways riskier than older ones, but they are also more efficient. It would be optimal for offshore operators ready to buy some novel technology to select the right offer, given their respective safety policies, from all existing possibilities. But operators hardly know of all these possibilities; the contractors who develop new technology do. But how could the latter optimally select the design option which should be offered to a given operator, to best serve its needs? The present paper deals with this question by connecting technical possibilities with company strategies in an integrated and quantified model: the output data of a physical model are entered as input into a psycho-management risk model. As a result, one can compute optimal characteristics for each operator of a new technology. This helps the contractor sell and monitor its offer under uncertainty. It also induces the operator to buy the innovative technology. We use some specific software developed at GRID (Group of research on Risk, Information and Decision, affiliated to ENSAM) to assess safety policies of operators. A real case is analyzed and presented. We argue that our model produces insight, by revealing knowledge which officers of the contractor company in long lasting contact with a given operator have internally accumulated, but which they are not able to express under any operational format. Such knowledge is ignored by industrial engineering, but often turns out to be richer than what can be extracted from any available data. One difficulty is to manage the software’s session in such a way that officers will answer the questions. The other difficulty is to convince engineering and risk managers that the “Human factor” is much richer than it is given credit for in textbooks and even more accurate than most existing data. Thus, we substantially improve existing industrial management techniques as currently applied to offshore technology, and more generally existing practice in the industry.

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