Research and application of infrared thermography testing technology for large-scale amusement rides

2022 ◽  
Vol 64 (1) ◽  
pp. 12-19
Author(s):  
Gongtian Shen ◽  
Yuan Liu ◽  
Zunxiang Wang ◽  
Yue Yu
Keyword(s):  
Infrared Thermography ◽  
Large Scale ◽  
Social Impact ◽  
Hydraulic Systems ◽  
Technical Standards ◽  
Infrared Thermal Imaging ◽  
Hydraulic Machinery ◽  
Technical Requirements ◽  
Testing Technology ◽  
Variation Characteristics

The operation of large-scale amusement rides is directly related to the safety of the passengers. When an accident occurs involving an amusement ride, the social impact is extremely negative. Therefore, the safety requirements for large-scale amusement rides are extremely high. Condition monitoring and fault diagnosis technologies provide effective ways to ensure the safe operation. Infrared thermal imaging is a common inspection and monitoring technology, which is widely used in electrical and hydraulic machinery systems. However, there is little literature about the application of infrared thermography (IRT) in large-scale amusement rides and a lack of analysis and evaluation methods for infrared inspection results. In order to expand this technology to the field of large-scale amusement rides, it is necessary to research the temperature increase characteristics of key components and develop corresponding technical standards. In the current study, the temperature variation characteristics of the electrical and hydraulic systems of large-scale amusement rides are first examined. Subsequently, the first IRT testing standard for amusement rides in China is described, including its main content and technical requirements. Two test cases are provided in this study in order to illustrate the practicability and reliability of infrared thermography testing technology in the large-scale amusement rides industry.

scholarly journals Infrared Thermography Measurement for Vibration-Based Structural Health Monitoring in Low-Visibility Harsh Environments

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7067
Author(s):  
Jia-Hao He ◽  
Ding-Peng Liu ◽  
Cheng-Hsien Chung ◽  
Hsin-Haou Huang
Keyword(s):  
Structural Health Monitoring ◽  
Infrared Thermography ◽  
Mode Shape ◽  
Health Monitoring ◽  
Large Scale ◽  
Frame Structure ◽  
Harsh Environments ◽  
Thermal Imager ◽  
Heat Sources ◽  
Structural Health

In this study, infrared thermography is used for vibration-based structural health monitoring (SHM). Heat sources are employed as sensors. An acrylic frame structure was experimentally investigated using the heat sources as structural marker points to record the vibration response. The effectiveness of the infrared thermography measurement system was verified by comparing the results obtained using an infrared thermal imager with those obtained using accelerometers. The average error in natural frequency was between only 0.64% and 3.84%. To guarantee the applicability of the system, this study employed the mode shape curvature method to locate damage on a structure under harsh environments, for instance, in dark, hindered, and hazy conditions. Moreover, we propose the mode shape recombination method (MSRM) to realize large-scale structural measurement. The partial mode shapes of the 3D frame structure are combined using the MSRM to obtain the entire mode shape with a satisfactory model assurance criterion. Experimental results confirmed the feasibility of using heat sources as sensors and indicated that the proposed methods are suitable for overcoming the numerous inherent limitations associated with SHM in harsh or remote environments as well as the limitations associated with the SHM of large-scale structures.

scholarly journals Design of Self-Tuning Regulator for Large-Scale Interconnected Hammerstein Systems

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Mourad Elloumi ◽  
Samira Kamoun
Keyword(s):  
Large Scale ◽  
Recursive Algorithm ◽  
Minimum Variance ◽  
Parametric Estimation ◽  
Hammerstein Model ◽  
Stochastic Nonlinear Systems ◽  
Hydraulic Systems ◽  
Self Tuning ◽  
Variance Approach ◽  
Error Method

This paper deals with the self-tuning regulator for large-scale stochastic nonlinear systems, which are composed of several interconnected nonlinear monovariable subsystems. Each interconnected subsystem is described by discrete Hammerstein model with unknown and time-varying parameters. This self-tuning control is developed on the basis of the minimum variance approach and is combined by a recursive algorithm in the estimation step. The parametric estimation step is performed on the basis of the prediction error method and the least-squares techniques. Simulation results of the proposed self-tuning regulator for two interconnected nonlinear hydraulic systems show the reliability and effectiveness of the developed method.

Recent Patents on Third Generation Bearing Testing Machine

2021 ◽  
Vol 15 ◽  
Author(s):  
Yanling Zhao ◽  
Huanqing Zhang
Keyword(s):  
Large Scale ◽  
High Efficiency ◽  
Testing Machine ◽  
Theoretical Research ◽  
Third Generation ◽  
Existing Problems ◽  
Military Equipment ◽  
Bearing Life ◽  
The Future ◽  
Testing Technology

Background: Bearing testing machine is the key equipment for bearing design, theoretical research and improvement, and it plays an important role in the performance of bearing life, fatigue, vibration and working temperature. With the requirements of aerospace, military equipment, automobile manufacturing and other industrial fields of the bearing are becoming higher and higher. There is an urgent need for high-precision and high-efficiency bearing testing machines to monitor and analyze the performance of bearings. Objective: By analyzing the recent patents, the characteristics and existing problems of the current bearing testing machine are summarized to provide references for the development of bearing test equipment in the future. Methods: This paper reviews various representative patents related to the third generation bearing testing machines. Results: Although the structure of bearing testing machines is different, the main problems in the structure and design principle of bearing testing machine have been summarized and analyzed, and the development of trend and direction of the future bearing testing machine have been discussed. Conclusion: Bearing testing machines for health monitoring of bearing life cycle is of great significance. The current bearing testing machine has basically achieved the monitoring and analysis However, due to the emergence of new types of bearings, further improvement is still needed. With the development of testing technology towards intelligent and big data-driven direction, bearing testing machine is moving towards the type of cloud computing and large-scale testing.

scholarly journals LIMITER – CONSTRUCTIVE COMPONENT, NECESSARY FOR DETERMINING A SUBJECT SHORT-POINTED WEAPONS

2020 ◽  
pp. 350-360
Author(s):  
V. Bolshakov ◽  
Yu. Maznichenko ◽  
Yu. Holub ◽  
M. Molyboha ◽  
I. Samoilenko
Keyword(s):  
Current Method ◽  
Special Forces ◽  
Technical Standards ◽  
Systematic Analysis ◽  
Physical Strength ◽  
Technical Requirements ◽  
Current State ◽  
The Us ◽  
The Difference ◽  
Definition Of

The systematic analysis of the world experience of civilian use of knives not as cold weapons showed that at present the knife did not become the main attribute of equipping tourists, fish men and even hunters. In particular, today there are very few types of hunting, during which the knife is used to finish off the beast or to protect against it. At the same time, as the practice of hunting management proves, during hunting there are many uses for the knife, even without considering it as a means for cooking. This, in particular, sharpening various stakes (for a tent, a hut, a campfire), skinning a game, preparing chips for a fire, scraping ice from skis or marsh mud from shoes. To do this, in accordance with current state technical standards, any folding knife must have a lock, and the blades of all knives must be of sufficient thickness so as not to break from the load. Handles of hunting knives should be comfortable to hold so that your hand will not get tired during long-term work. For all knives, according to the technical requirements, the length and thickness of the blade must be consistent, as well as the angle of inclination of the tip relative to the axis of the blade. With regard to the above, an interesting example is the collection of knives by the Swedish company Eriksson, consisting of four models, made in the configuration of the Swedish finca. The knives have a handle and a blade of a classic Finnish knife, but with a one-sided stopper. Their blades, depending on the color of the handle, are made of different types of steel. Knives with blue plastic handles have stainless steel blades, and knives with red handles are made of carbon steel. It is believed that in Sweden almost every construction worker walks with such a knife in his pocket. It should be noted that according to the current method of forensic investigation of cold weapons and structurally similar products in it, these knives can be attributed to cold weapons by the size of the blade. It is also interesting an urban-type knife, which is not a cold weapon of the Worden Tactical Medium Company. Renowned wizard Kelly Warden, an instructor for American Rangers, designs this knife. Since 2001, Kelly Warden has been the main consultant on impact and blade weapons of Detachment 1 of the US Special Forces. He trains Special Forces hand-to-hand combat with the use of a knife, machete, baton, sticks, as well as the method of forceful detention. The blade length of the knife described is 74 mm, thickness – 3.8 mm; the handle has a sub-finger protrusion to prevent the arm from slipping on the blade. The knife does not have a standard stopper, which, in addition to protecting it from slipping the hand on the blade, must prevent the hand from sinking into the victim’s body. By all measures, this knife is not a cold weapon in accordance with the requirements of the criminal law of Ukraine. Kelly Warden believes that the knife as a means of self-defense levels the difference in weight, height and physical strength, but its main drawback is its damaging ability. The proposed article is devoted to this circumstance, the definition of the role of the restrictor in classifying a knife as a cold weapon.

scholarly journals Proteomics and metabolomics in cow fertility: a systematic review

Reproduction ◽  
2020 ◽  
Vol 160 (5) ◽  
pp. 639-658
Author(s):  
Nicolas Aranciaga ◽  
James D Morton ◽  
Debra K Berg ◽  
Jessica L Gathercole
Keyword(s):  
Oxidative Stress ◽  
Systematic Review ◽  
Large Scale ◽  
Reproductive Tract ◽  
Early Embryo ◽  
Female Reproductive Tract ◽  
Full Potential ◽  
Technical Standards ◽  
The Impact

Cow subfertility is a multi-factorial problem in many countries which is only starting to be unravelled. Molecular biology can provide a substantial source of insight into its causes and potential solutions, particularly through large scale, untargeted omics approaches. In this systematic review, we set out to compile, assess and integrate the latest proteomic and metabolomic research on cow reproduction, specifically that on the female reproductive tract and early embryo. We herein report a general improvement in technical standards throughout the temporal span examined; however, significant methodological limitations are also identified. We propose easily actionable avenues for ameliorating these shortcomings and enhancing the reach of this field. Text mining and pathway analysis corroborate the relevance of proteins and metabolites related to the triad oxidative stress-inflammation-disease on reproductive function. We envisage a breakthrough in cattle reproductive molecular research within the next few years as in vivo sample techniques are improved, omics analysis equipment becomes more affordable and widespread, and software tools for single- and multi-omics data processing are further developed. Additional investigation of the impact of local oxidative stress and inflammation on fertility, both at the local and systemic levels, is key towards realising the full potential of this field.

Perceived Trust and Confidence for Cryptocurrency Adoption

2022 ◽  
pp. 250-279
Author(s):  
Ewilly Jie Ying Liew ◽  
Wei Li Peh ◽  
Zhuan Kee Leong
Keyword(s):  
Large Scale ◽  
Social Impact ◽  
Public Perceptions ◽  
Middle Income ◽  
Individual Level ◽  
Perceived Trust ◽  
Middle Income Countries ◽  
Regulatory Bodies ◽  
The Individual ◽  
National Databases

This chapter seeks to examine the influence of public perceptions of trust in people and confidence in institutions on cryptocurrency adoption, taking into account the individual-level demographic factors and the regional-level contextual factors. Data is obtained from three large-scale international surveys and national databases and analyzed using R software. The multivariate results demonstrate that individuals' public perceptions of trust and confidence significantly contribute to cryptocurrency adoption. Lower perceived trust in people and higher perceived confidence in civil service and international regulatory bodies increase cryptocurrency adoption, while perceived confidence in political and financial institutions discourages cryptocurrency adoption. Additionally, the univariate results find significant comparisons of gender and perceived trust differences on the predictors of cryptocurrency adoption. This chapter discusses and provides insights on the social impact and future of cryptocurrency adoption, particularly among the upper- and lower-middle-income countries.

scholarly journals Proper Use of Technical Standards in Offshore Petroleum Industry

2020 ◽  
Vol 8 (8) ◽  
pp. 555 ◽  
Author(s):  
Dejan Brkić ◽  
Pavel Praks
Keyword(s):  
Large Scale ◽  
Oil And Gas ◽  
Petroleum Industry ◽  
Health And Safety ◽  
Oil And Gas Industry ◽  
European Economic Area ◽  
The European Union ◽  
Technical Standards ◽  
The North ◽  
Offshore Petroleum

Ships for drilling need to operate in the territorial waters of many different countries which can have different technical standards and procedures. For example, the European Union and European Economic Area EU/EEA product safety directives exclude from their scope drilling ships and related equipment onboard. On the other hand, the EU/EEA offshore safety directive requires the application of all the best technical standards that are used worldwide in the oil and gas industry. Consequently, it is not easy to select the most appropriate technical standards that increase the overall level of safety and environmental protection whilst avoiding the costs of additional certifications. We will show how some technical standards and procedures, which are recognized worldwide by the petroleum industry, can be accepted by various standardization bodies, and how they can fulfil the essential health and safety requirements of certain directives. Emphasis will be placed on the prevention of fire and explosion, on the safe use of equipment under pressure, and on the protection of personnel who work with machinery. Additionally considered is how the proper use of adequate procedures available at the time would have prevented three large scale offshore petroleum accidents: the Macondo Deepwater Horizon in the Gulf of Mexico in 2010; the Montara in the Timor Sea in 2009; the Piper Alpha in the North Sea in 1988.

Leveraging Events to Develop Collaborative Partnerships: Examining the Formation and Collaborative Dynamics of the Ontario Parasport Legacy Group

2020 ◽  
Vol 34 (5) ◽  
pp. 447-461
Author(s):  
Laura Misener ◽  
Landy Di Lu ◽  
Robert Carlisi
Keyword(s):  
Large Scale ◽  
Social Impact ◽  
Cultural Influence ◽  
Strategic Leadership ◽  
Collaborative Partnerships ◽  
Critical Component ◽  
Sport Event ◽  
The Cross ◽  
Sport Events ◽  
Resource Conditions

The strategic formation of partnerships for leveraging sport events to achieve social impact is becoming a critical component of large-scale sport events. The authors know less about the process dimensions related to the formation and collaborative dynamics of a sport event–leveraging partnership. To address this gap, the authors focus on examining the formation and collaborative dynamics alongside the challenges of the cross-sector partnership, the Ontario Parasport Legacy Group (OPLG), which emerged as an important leveraging strategy for the Toronto 2015 Pan/Parapan American Games. The authors found that the formation of the OPLG was shaped through broader environmental elements—including resource conditions, window of collaborative opportunity, and cultural influence—and essential drivers of strategic leadership and consequential incentives. Furthermore, the authors’ analysis shows that the development of the OPLG and its effectiveness in partnership delivery were determined through key domains of collaborative dynamics (i.e., engagement, motivation, and joint capacity).

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