Intrinsic Hydraulic Hose Condition Monitoring for Prevention of Catastrophic Failure

2011 ◽  
Author(s):  
Scott A. Smith ◽  
Dallas J. Capesius
Keyword(s):  
High Pressure ◽  
Warning System ◽  
Electrical Circuit ◽  
Personal Injury ◽  
Environmental Damage ◽  
Physical Damage ◽  
Wireless System ◽  
Current State ◽  
The Status ◽  
Useful Life

High-pressure hydraulic hoses are used throughout industry to transmit fluid power. The current state of the art in hose replacement consists of two strategies; these are (1) replacement upon failure and (2) time-based replacement. For the replacement upon failure method, end users inspect hoses and either replace when there is obvious physical damage or the hose has burst and allowed the release of fluid under high pressure. Hose users that employ time-based replacement cycles often collect data and either subjectively or statistically choose a replacement frequency intended to prevent unexpected failures. Engineers at Eaton Corporation worked with Purdue University to develop an alternative. A novel hose construction using two conductors with an isolating layer provides a component in an electrical circuit which can be monitored to determine the status, or health, of a hose in operation. The first step in this development was the realization that hose failure is a process and not an event. By tracking a hose’s electrical signature and characterizing the change that occurs when the internal structure begins to break down, a user is alerted prior to a catastrophic hose failure. Eaton is developing notification systems capable of both monitoring the hose’s electrical signature and alerting an equipment user prior to unexpected failure. The system requires direct electrical connection to the hose fitting for monitoring. There are currently two strategies in development, a wired system and a wireless system. The wired system uses a remote diagnostic unit with cables running to each hose assembly to query the hose and alert an equipment user directly. The wireless system employs battery-powered sensors installed on a hose assembly which communicate with a gateway located nearby. When a hose approaches its end of life a warning is issued by illuminating a warning light or issuing a remote warning through a cellular or wireless network. There are significant gains in the ability to prevent hydraulic hose failures. These unexpected incidents lead to downtime, damage to equipment, environmental damage, and serious personal injury. Additionally, using this advanced warning system allows users to use nearly a hose’s entire life. This improves asset utilization considerable when compared to the useful life sacrificed by using time-based replacement schedules. This technology will reduce operating costs and prevent downtime, environmental incidents, and the threat of personal injury present when hydraulic hose fails.

On the Development of Islamic Jurisprudence

1999 ◽  
Vol 16 (1) ◽  
Author(s):  
Murad Wilfried Hofmann
Keyword(s):  
The State ◽  
Current State ◽  
Islamic Jurisprudence ◽  
The Status ◽  
Sensitive Issues ◽  
Status Of Women ◽  
Islam And Democracy

This article examines the state of Islamic jurisprudence with regard to many sensitive issues, such as the status of women and minorities in Islam, Islam and Democracy, hudud punishments. The author explores the current state of Islamic discourse on jurisprudence and identifies three approaches-traditional, secular and reformist. The paper explores the positions of the traditional ulama and the reformist muj­tahids on the mentioned topics and finds the reformist position more sensible and closer to the position of ihe Qur'an and Sunnah. This paper while advocating neo-ijtihad, makes an impressive case for the merit???? and Islamic credibility of the reformist jurisprudence.

Guaranteed cost and finite-time event-triggered control of fractional-order switched systems

2021 ◽  
pp. 014233122110048
Author(s):  
Yilin Shang ◽  
Leipo Liu ◽  
Yifan Di ◽  
Zhumu Fu ◽  
Bo Fan
Keyword(s):  
Fractional Order ◽  
Finite Time ◽  
Switched Systems ◽  
Sufficient Conditions ◽  
Average Dwell Time ◽  
Electrical Circuit ◽  
Linear Matrix ◽  
Current State ◽  
Guaranteed Cost ◽  
Event Triggered

This paper considers the problem of guaranteed cost and finite-time event-triggered control of fractional-order switched systems. Firstly, an event-triggered scheme including both the information of current state and an exponential decay function is proposed, and a novel cost function that adopts the characteristics of fractional-order integration is presented. Secondly, some sufficient conditions are derived to guarantee that the corresponding closed-loop system is finite-time stable with a certain cost upper bound, using multiple Lyapunov functions and average dwell time approach. Meanwhile, the event-triggered parameters and state feedback gains are simultaneously obtained via solving linear matrix inequalities. Moreover, Zeno behavior does not exist by finding a positive lower bound of the triggered interval. Finally, an example about fractional-order switched electrical circuit is provided to show the effectiveness of the proposed method.

Current state-of-the-art antiplatelet and anticoagulation therapy in diabetic patients with coronary artery disease

2021 ◽  
Author(s):  
Johny Nicolas ◽  
Victor Razuk ◽  
Gennaro Giustino ◽  
Roxana Mehran
Keyword(s):  
Diabetes Mellitus ◽  
Complex Disease ◽  
Anticoagulation Therapy ◽  
Treatment Strategies ◽  
Diabetic Patients ◽  
Current State ◽  
Organ Systems ◽  
Patients With Diabetes ◽  
The Status ◽  
Artery Disease

Diabetes mellitus is a complex disease that leads to long-term damage to various organ systems. Among the numerous cardiovascular disease-related complications, thrombotic events frequently occur in patients with diabetes. Although guidelines exist for treating and preventing most diabetes-related co-morbidities, the evidence on antithrombotic therapy in primary and secondary prevention is limited due to the scarcity of randomized trials dedicated to patients with diabetes mellitus. Most of the available data are derived from studies that only included a small proportion of patients with diabetes. The present review provides an overview of the status of knowledge on antiplatelet and anticoagulation therapy in patients with diabetes, focusing on the risk–benefit balance of these therapies and future treatment strategies.

Getting Tsunami Recovery and Early Warning Right

2006 ◽  
Vol 31 (1) ◽  
pp. 54-61
Author(s):  
Ben Wisner ◽  
Peter Walker
Keyword(s):  
Indian Ocean ◽  
Early Warning ◽  
Warning System ◽  
Status Quo ◽  
Indian Ocean Tsunami ◽  
Tropical Storms ◽  
Warning Systems ◽  
Tsunami Warning System ◽  
Policy Makers ◽  
The Status

The massive human and economic impact of the Asian tsunami in later 2004 is mirrored in the aftershocks felt among humanitarian organisations, development agencies, and policy makers. This paper raises a number of these troubling, fundamental issues. Firstly, the call for an Indian Ocean tsunami warning system raises fundamental issues about what warning systems can, and cannot, do. Secondly, one is also forced to consider why in the first place so many people live on exposed coasts today, vulnerable not only to tsunamis but tropical storms and rainy season flooding among other hazards. Thirdly, one is challenged to question the very meaning of “recovery”. Such massive damage has been done and so many people and their livelihoods have been dislocated, is it actually possible to imagine a return to the status quo ante? Fourthly, reconstruction of the magnitude now underway in the affected areas raises many difficult questions about accountability, transparency, and the unevenness with which the international community responds to crises. The paper finishes with some recommendations.

scholarly journals Prototyping of Flooding Early Warning System using Internet of Things Technology and Social Media

2018 ◽  
Vol 197 ◽  
pp. 16003
Author(s):  
Aris Haris Rismayana ◽  
Castaka Agus Sugianto ◽  
Ida Bagus Budiyanto
Keyword(s):  
Social Media ◽  
Internet Of Things ◽  
Water Level ◽  
Water Distribution ◽  
Warning System ◽  
Integrated System ◽  
Water Levels ◽  
Prototype System ◽  
The Status ◽  
Internet Of Things Technology

When the rainy season arrives, flooding is a common phenomenon. Almost every street, housing, village, river, even in the city center, wherever floods can occur. One effort to prevent the flooding is to create a floodgate on reservoirs or dams that are used to control the water distribution. The water level at this dam must be checked frequently to anticipate if the water level is at a dangerous level. The inspection of water levels will be very difficult if it must be conducted by humans who must be available in the field at any time. This research aims to create a prototype system that can replace the human role in monitoring the dam water level condition at any time by developing an integrated system between hardware and software using IoT (Internet of Things) technology approach and social media (twitter and telegram). The developed system consists of the height sensor (distance), microcontroller and wifi module, which is placed on the water gate. This system serves to measure the water level at any time and send data in real time to the server. The results of system testing performed shows that when the system is in normal circumstances, the system sends data to the server every minute, and updates the status of water level in twitter every 5 minutes. In case the water level has exceeded a predetermined limit, the system sends data to the server every 5 seconds and passes the warning message to all registered telegram contacts.

Development and Evaluation of a Mobile Plant to Prepare Natural Gas for Use in Foam Fracturing Treatments

2017 ◽  
Author(s):  
Griffin Beck ◽  
Melissa Poerner ◽  
Kevin Hoopes ◽  
Sandeep Verma ◽  
Garud Sridhar ◽  
...  
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Oil And Gas ◽  
Department Of Energy ◽  
Gas Processing ◽  
Current State ◽  
Fracturing Process ◽  
Mobile Plant ◽  
Processing Plants ◽  
Production Techniques

Hydraulic fracturing treatments are used to produce oil and gas reserves that would otherwise not be accessible using traditional production techniques. Fracturing treatments require a significant amount of water, which has an associated environmental impact. In recent work funded by the Department of Energy (DOE), an alternative fracturing process has been investigated that uses natural gas as the primary fracturing fluid. In the investigated method, a high-pressure foam of natural gas and water is used for fracturing, a method than could reduce water usage by as much as 80% (by volume). A significant portion of the work focused on identifying and optimizing a mobile processing facility that can be used to pressurize natural gas sourced from adjacent wells or nearby gas processing plants. This paper discusses some of the evaluated processes capable of producing a high-pressure (10,000 psia) flow of natural gas from a low-pressure source (500 psia). The processes include five refrigeration cycles producing liquefied natural gas as well as a cycle that directly compresses the gas. The identified processes are compared based on their specific energy as calculated from a thermodynamic analysis. Additionally, the processes are compared based on the estimated equipment footprint and the process safety. Details of the thermodynamic analyses used to compare the cycles are provided. This paper also discusses the current state of the art of foam fracturing methods and reviews the advantages of these techniques.

What Library 2.0 has taught libraries in Taiwan about e-learning

2015 ◽  
Vol 33 (6) ◽  
pp. 1121-1132 ◽  
Author(s):  
Tien-Chi Huang
Keyword(s):  
Educational Value ◽  
Content Type ◽  
Feedback Model ◽  
Learning Platform ◽  
Current State ◽  
Library Resources ◽  
The Status ◽  
Library Development ◽  
E Learning ◽  
Definition Of

Purpose – This paper aims to review the four elements of Library 2.0, which represents a major innovation, and adopts several pedagogical concepts to investigate other innovations libraries in Taiwan could implement to become ideal libraries. Design/methodology/approach – This paper presents an overview of the essential principles of Library 2.0 and examines the current state of libraries in Taiwan. The authors then present a reciprocal feedback model of Library 2.0+. Findings – A Library 2.0+ model and a concept map of the mutualism between e-learning education and Library 2.0+ were proposed to diminish the gap between the status quo and Library 2.0. Two recommendations are provided: to develop a library learning platform to maximize the education value of the library, and to regard library development as part of the overall community’s development. Users can access library resources anytime/anywhere by visiting the library learning platform without visiting the library. Allowing an individual approach is necessary to realize the social educational value of the library. Moreover, a Library 2.0 library engages more in community development and invites participation with participation in community first. Universities in the community would be good technology partners when developing a Library 2.0 library. Originality/value – Although there has been extensive research of library development in view of Library 2.0, such a topic has never been explored with an educational perspective, especially an e-learning perspective. Given that the definition of Library 2.0 is abstract and fairly broad, the authors take the view of an e-learning platform to make Library 2.0 more figurative. Moreover, through interdisciplinary exploration, concrete suggestions regarding library development are provided to librarians, especially those with similar conditions as those in Taiwan.

Evaluation of Performance of Various Coolant Grades When Turning Ti-6Al-4V Alloy With Uncoated Carbide Tools Under High-Pressure Coolant Supplies

2018 ◽  
Vol 141 (1) ◽  
Author(s):  
Emmanuel O. Ezugwu ◽  
Rosemar B. da Silva ◽  
John Bonney ◽  
Eder S. Costa ◽  
Wisley F. Sales ◽  
...  
Keyword(s):  
High Pressure ◽  
Failure Modes ◽  
Physical Damage ◽  
Evaluation Of Performance ◽  
Life Tool ◽  
Resistance To Oxidation ◽  
Tension Properties ◽  
Almost All ◽  
Coolant Delivery ◽  
High Pressure Coolant

This work presents the evaluation of three commercially available coolant grades (dicyclohexylamine-based coolant, a triethanolamine-based coolant, and an ester-based coolant) when machining Ti-6Al-4V alloy with high-pressure coolant delivery. The evaluations were based on tool life, tool failure modes, surface integrity, and chip formation. The dicyclohexylamine-based coolant was the more effective coolant when machining at the highest pressure of 20.3 MPa due to its stability at elevated temperature, whereas the triethanolamine-based coolant performed effectively at a pressure of 11 MPa due to its low surface tension properties. Deterioration of the ester-based coolant was found in almost all coolant pressures due to its low resistance to oxidation. Surfaces generated when machining with all coolants grades were generally acceptable with negligible physical damage.

scholarly journals Characteristics of the world and Russian production of fruits products (apples and pears)

2018 ◽  
Vol 7 (2) ◽  
pp. 20-26
Author(s):  
Lyubov Georgievna Demenina ◽  
Anna Borisovna Petrova ◽  
Kristina Andreevna Savitskaya ◽  
Lyudmila Mikhailovna Kavelenova
Keyword(s):  
Statistical Data ◽  
Fruit Production ◽  
Biologically Active ◽  
Human Diet ◽  
Current State ◽  
The World ◽  
The Status ◽  
Fruit Growing ◽  
Rosaceae Family ◽  
Active Substances

The paper deals with the peculiarities of the biological characteristics of the most important fruit crops of temperate climates - apple and pear (Rosaceae family, subfamily Maloideae), taking into account the world, national and regional cultivation. Both cultures are characterized by significant food and commodity value, have some differences in the chemical composition of the fruit, including the leading components of the mass and biologically active substances, which determine the peculiarities of their use in the human diet. In both global and national fruit-growing, pears play a secondary role compared to apple, giving way to the number of varieties, the volume of production and the areas occupied. Based on the analysis of available statistical data of the FAO database, the dynamics of changes from 1990 to 2016 of the world production of apple and pear fruits with visualization on the continents, identifying world leaders and major trends are considered. For the USSR (from 1962 to 1990) and in Russian Federation (from 1992 to 2016) the paper presents a picture of changes in the volume of fruit production, discusses the status of fruit production in the country. The features of the historical development and current state of fruit growing in the Samara Region and prospects are discussed.

scholarly journals DIALOGICAL LINGUISTICS IN RUSSIA: THE HISTORY OF FORMATION AND THE CURRENT STATUS

2021 ◽  
pp. 159-173
Author(s):  
N. N. Shpilnaya ◽  
Keyword(s):  
General Theory ◽  
Research Program ◽  
Linguistic Theory ◽  
Final Part ◽  
Current Status ◽  
Interactional Theory ◽  
Current State ◽  
The Status ◽  
History Of ◽  
History Of Formation

The article is an outline of the development of Dialogical Linguistics in Russia. It represents its milestones of formation and the current state. Dialogical Linguistics is considered to be an integral linguistic branch, claiming the status of a distinct «research program» and comprises such sections as follows: Linguistics of Dialogical Text, Linguistic Theory of Replication, Interactional Theory of Dialogue, General Theory of Dialogue. In the final part of the article, the principles of dialogical modeling of linguistic objects are being formulated.

Sign in / Sign up

Export Citation Format

Share Document