Academic literature on the topic 'Cameron Cruise'
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Journal articles on the topic "Cameron Cruise"
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Stone, Ian R. "The Falklands and the Dwarf: The Cruise of HMS Dwarf in the Falkland Islands 1881–1882. C.H. Layman and J. Cameron. 1995. Chippenham: Picton Publishing, xiv + 160 p, illustrated, hard cover. ISBN 0-0948251-76-X. £25.00." Polar Record 32, no. 182 (July 1996): 262–63. http://dx.doi.org/10.1017/s0032247400025249.
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Jadhav, Rohit. "Design and Simulation of a Vehicle Speed Detection and Control System Using Speed Restriction Signboards." International Journal for Research in Applied Science and Engineering Technology 10, no. 1 (January 31, 2022): 1568–76. http://dx.doi.org/10.22214/ijraset.2022.40053.
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Abstract: Over speeding vehicles is the most serious problem in any country. For control, the government imposed speed limits for cars traveling on various roadways. We can identify vehicle speed in real-time using speed cameras, but we can't slow down the driver. So, in this project, we connect automobiles to traffic speed cameras, which can inform drivers about their speed on a digital display and slow them down. Keywords: Speed Detection of Vehicle, Automatic Cruise Control, Speed Signboard Adaptation, Traffic Analysis, Vehicle Speed Control System, Over speed Control System.
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Zhu, Yating, Xiaofei Ye, Jun Chen, Xingchen Yan, and Tao Wang. "Impact of Cruising for Parking on Travel Time of Traffic Flow." Sustainability 12, no. 8 (April 12, 2020): 3079. http://dx.doi.org/10.3390/su12083079.
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Cruising for parking creates a moving queue of cars that are waiting for vacated parking spaces, but no one can see how many cruisers are in the queue because they are mixed in with normal cars that are actually going somewhere. In order to mitigate the influence of cruising for parking on the normal cars, the park-and-visit cruising tests with GPS and cameras was applied to collect the behavior of the cruisers, and the videotapes of traffic flows were used to measure the volume of cruising cars and the traffic status of normal cars, simultaneously. On this basis, a parking time model based on proportional hazard-based duration model was proposed, and the factors affecting cruise for parking were analyzed, including the volume, search time, speed, acceleration, lane-change frequency, and distracted time of the cruising car. The multiple linear regression model was also established to compare with proportional hazard-based duration model results. The results indicated that between 9 and 56 percent of the traffic was cruising for parking, and the average search time was about 6.03 min. The low-speed, volume, high acceleration frequency, and lane-change times of cruising cars have a negative effect on shortening travel time of the normal traffic flow. Conversely, high-speed of cruising cars has a positive effect on shortening travel time of traffic flow. Moreover, travel time changes in varying degrees due to various factors. Under postulated conditions, the model can be used to estimate the travel time. It is hoped that this study will contribute to improve the planning and management of cruising for parking.
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Bassem Nashaat Zakher, Mostafa El-Hadary, Mohammed Abd Elfatah Elgohary, and Ibrahim M. El Fahham. "A Comparison Between Experimental Life Road Simulation and Computational Fluid Dynamics and Fluid Structure Interaction for Sedan Car." CFD Letters 14, no. 2 (March 2, 2022): 81–97. http://dx.doi.org/10.37934/cfdl.14.2.8197.
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The flow around road vehicle is characterized by regions of separation that affect the aerodynamics and performance of the vehicle due to the variations in the negative pressure zones. In this work, Computational fluid dynamics and Fluid-structure interaction models are developed to simulate the aerodynamic performance of a sedan car. An experimental live road simulation is conducted to validate the performance and the accuracy of the presented models. The experimental setup was organized on a sedan car using tufts and digital cameras for flow visualization. Four cruise speeds of 40, 60, 80, and 100 km/hr are used. At low cruise speed the FSI simulation can attain the required result for indicating the negative pressure zones, created behind the car tail and mostly close to the car body. The experimental results appear to visualize the movement of the tufts that attained a certain angle corresponding to the flow speed, which matches the distribution of negative pressure and wake area. At high cruise speed the CFD simulation elucidated the separation area where the negative pressure created behind the car tail matched the movement of the tufts which attained an approximate straight angle corresponding to the flow speed having a swirling movement.
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Eber, Christine, Megan Snedden, and Meghann Dallin. "Reflections on Working with Women's Cooperative Economic Groups in the United States, Mexico and Cameroon." Practicing Anthropology 28, no. 3 (July 1, 2006): 28–33. http://dx.doi.org/10.17730/praa.28.3.f6623u8038t13254.
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In this paper we discuss how we arrived on three separate paths toward women-centered forms of organizing. We work with women's cooperative groups in rural communities of New Mexico, Chiapas, Mexico, and Cameroon, Africa. Our discussions began when Megan Snedden and Meghann Dallin took classes with Christine Eber at New Mexico State University in Las Cruces and participated in solidarity efforts with Chiapas cooperatives. After graduation, Megan went on to work locally and Meghann went to Cameroon.
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Wang, Qingkai, Peng Lu, Yongheng Zu, Zhijun Li, Matti Leppäranta, and Guiyong Zhang. "Comparison of Passive Microwave Data with Shipborne Photographic Observations of Summer Sea Ice Concentration along an Arctic Cruise Path." Remote Sensing 11, no. 17 (August 26, 2019): 2009. http://dx.doi.org/10.3390/rs11172009.
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Arctic sea ice concentration (SIC) has been studied extensively using passive microwave (PM) remote sensing. This technology could be used to improve navigation along vessel cruise paths; however, investigations on this topic have been limited. In this study, shipborne photographic observation (P-OBS) of sea ice was conducted using oblique-oriented cameras during the Chinese National Arctic Research Expedition in the summer of 2016. SIC and the areal fractions of open water, melt ponds, and sea ice (Aw, Ap, and Ai, respectively) were determined along the cruise path. The distribution of SIC along the cruise path was U-shaped, and open water accounted for a large proportion of the path. The SIC derived from the commonly used PM algorithms was compared with the moving average (MA) P-OBS SIC, including Bootstrap and NASA Team (NT) algorithms based on Special Sensor Microwave Imager/Sounder (SSMIS) data; and ARTIST sea ice, Bootstrap, Sea Ice Climate Change Initiative, and NASA Team 2 (NT2) algorithms based on Advanced Microwave Scanning Radiometer 2 (AMSR2) data. P-OBS performed better than PM remote sensing at detecting low SIC (< 10%). Our results indicate that PM SIC overestimates MA P-OBS SIC at low SIC, but underestimates it when SIC exceeds a turnover point (TP). The presence of melt ponds affected the accuracy of the PM SIC; the PM SIC shifted from an overestimate to an underestimate with increasing Ap, compared with MA P-OBS SIC below the TP, while the underestimation increased above the TP. The PM algorithms were then ranked; SSMIS-NT and AMSR2-NT2 are the best and worst choices for Arctic navigation, respectively.
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Pascal, Robin W., Margaret J. Yelland, Meric A. Srokosz, Bengamin I. Moat, Edward M. Waugh, Daniel H. Comben, Alex G. Cansdale, et al. "A Spar Buoy for High-Frequency Wave Measurements and Detection of Wave Breaking in the Open Ocean." Journal of Atmospheric and Oceanic Technology 28, no. 4 (April 1, 2011): 590–605. http://dx.doi.org/10.1175/2010jtecho764.1.
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Abstract Waves and wave breaking play a significant role in the air–sea exchanges of momentum, sea spray aerosols, and trace gases such as CO2, but few direct measurements of wave breaking have been obtained in the open ocean (far from the coast). This paper describes the development and initial deployments on two research cruises of an autonomous spar buoy that was designed to obtain such open-ocean measurements. The buoy was equipped with capacitance wave wires and accelerometers to measure surface elevation and wave breaking, downward-looking still and video digital cameras to obtain images of the sea surface, and subsurface acoustic and optical sensors to detect bubble clouds from breaking waves. The buoy was free drifting and was designed to collect data autonomously for days at a time before being recovered. Therefore, on the two cruises during which the buoy was deployed, this allowed a variety of sea states to be sampled in mean wind speeds, which ranged from 5 to 18 m s−1.
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Yang, Xin, and Henry Potter. "A Novel Method to Discriminate Active from Residual Whitecaps Using Particle Image Velocimetry." Remote Sensing 13, no. 20 (October 11, 2021): 4051. http://dx.doi.org/10.3390/rs13204051.
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Whitecap foam generated by wind-driven wave breaking is distinguished as either active (stage A) or residual (stage B). Discrimination of whitecap stages is essential to quantify the influence of whitecaps on the physical and chemical processes at the marine boundary layer. This study provides a novel method to identify whitecap stages based on visible imagery using particle image velocimetry (PIV). Data used are from a Gulf of Mexico cruise where collocated infrared (IR) and visible cameras simultaneously recorded whitecaps. IR images were processed by an established thresholding method to determine stage A lifetime from brightness temperature. The visible images were also filtered using a thresholding method and then processed using PIV to estimate the average whitecap velocity. A linear relationship was established between the lifetime of stage A and the timescale of averaged velocity. This novel method allows stage A whitecap lifetime to be determined using whitecap velocity and provides an objective approach to separate whitecap stages. This method paves the way for future research to easily quantify whitecap stages using affordable off-the-shelf video cameras. Results, which include evidence that whitecaps stop advancing before stage A ends and may be an indication of bubble plume degassing, are discussed.
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Ruan, Yu Qiang, Xiao Dong Zhang, Hanping Mao, Hong Yan Gao, Xin Zhang, and QinLin li. "Innovative Design of Intelligent Detection Equipment for Growth Information of Facilityhorticultural Crops." JOURNAL OF ADVANCES IN AGRICULTURE 11 (May 1, 2020): 79–88. http://dx.doi.org/10.24297/jaa.v11i.8737.
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Intelligent equipment technology for facility horticulture is an urgent need for the development of modern facility agriculture.The intelligent monitoring equipment for greenhouse crop growth information can comprehensively monitor the nutrition, growth and environmental information of crops, and provide a scientific basis for the optimal regulation and control of water, fertilizer and environment in the greenhouse. It is a key equipment for the intelligentization of facility horticulture. This research aims at different growth stages In accordance with the testing needs of different plant-shaped crops and the operational needs of the unstructured environment in the greenhouse, we developed wheeled and tracked crop growth and environmental information monitoring systems that can autonomously cruise in the greenhouse;at the same time, in order to meet the detection needs of large-plant crops, a cantilever type crop information monitoring system has also been developed. This system suspends the multi-sensor detection system through the gimbal and installs it on the orbit track laid on the greenhouse truss. Because the detection position is high, it is realized the cruise monitor of greenhouse plants such as cucumber and tomato. In order to achieve comprehensive detection of crop growth information, a multi-sensor detection system for horticultural crop information has been developed. It uses visible-near-infrared binocular multi-spectral cameras, infrared detection sensors, laser ranging sensors, ambient temperature and humidity and light sensors. through the multiple sensor information fusion, implements the facilities horticulture crops nutrition, growth and the comprehensive monitoring of environmental information. Good application effect has been achieved.
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Rezzolla, Danilo, Ginevra Boldrocchi, and Tiziano Storai. "Evaluation of a low-cost, non-invasive survey technique to assess the relative abundance, diversity and behaviour of sharks on Sudanese reefs (Southern Red Sea)." Journal of the Marine Biological Association of the United Kingdom 94, no. 3 (January 16, 2014): 599–606. http://dx.doi.org/10.1017/s0025315413001781.
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A low-cost and non-invasive survey technique focused on pelagic sharks was evaluated during an ecotourism cruise on two Sudanese reefs, Angarosh and Sha'ab Rumi, in the Southern Red Sea. The research technology was based on a set of small, underwater video recording cameras and a pair of laser pointers. Video footage provided insight into shark biodiversity on the two reefs, detecting five species, Alopias vulpinus, Sphyrna lewini, Triaenodon obesus, Carcharhinus amblyrhynchos and Galeocerdo cuvier, during 15.8 h of video recording. These recordings also provided preliminary information on aggregations of S. lewini. The laser pointers were used to measure the size of sharks, providing seven total length (TL) measurements for S. lewini (N = 2) and C. amblyrhynchos (N = 5), confirming the possibility of easily obtaining size parameters using this tool. These low-cost and user-friendly instruments provide ecotourism divers with an opportunity to become involved in marine research projects.
Dissertations / Theses on the topic "Cameron Cruise"
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Reeh, Andreas D. [Verfasser], Cameron [Akademischer Betreuer] Tropea, and Edward B. [Akademischer Betreuer] White. "Natural Laminar Flow Airfoil Behavior in Cruise Flight through Atmospheric Turbulence / Andreas D. Reeh. Betreuer: Cameron Tropea ; Edward B. White." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2014. http://d-nb.info/1111905657/34.
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Baker, Kenneth Rex III. "Lights, Camera, Creating Heroes in Action: Claus von Stauffenberg and the July 20th Conspirators in German and American Filmic Representations of the July 20th Plot." Bowling Green State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1241204154.
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"Vision-based adaptive cruise control using a single camera." Thesis, 2015. http://hdl.handle.net/10210/13800.
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M.Ing. (Electrical and Electronic Engineering)Adaptive Cruise Control (ACC) is proposed to assist drivers tedious manual acceleration or braking of the vehicle, as well as with maintaining a safe headway time gap. This thesis proposes, simulates, and implements a vision-based ACC system which uses a single camera to obtain the clearance distance between the preceding vehicle and the ACC vehicle. A three-step vehicle detection framework is used to obtain the position of the lead vehicle in the image. The vehicle coordinates are used in conjunction with the lane width at that point to estimate the longitudinal clearance range. A Kalman filter filters this range signal and tracks the vehicle’s longitudinal position. Since image processing algorithms are computationally intensive, this document addresses how adaptive image cropping improves the update frequency of the vision-based range sensor. A basic model of a vehicle is then derived for which a Proportional-Integral (PI) controller with gain scheduling is used for ACC. A simulation of the system determines whether the ACC algorithm will work on an actual vehicle.
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Gonçalves, Juan Carlos Vieira. "O museu líquido: uma proposta de reflexão sobre a fluidez museológica nos tempos atuais: estudo de caso dos museus tutelados pela direção Regional da Cultura da Região Autónoma da Madeira." Doctoral thesis, 2020. http://hdl.handle.net/10451/47970.
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Having as a theoretical allowance the concept of liquid museum presented by Olga Van
Oost (2012), Fiona Cameron (2015) and Maria Marras et al (2016), a museum paradigm that seeks to follow the liquid modernity postulated by Zygmunt Bauman, we elaborated, in the present research, a proposal of reflection about the museological fluidity in the present times. In this sense, the study presented here has as a general objective to analyze, in a first moment, and to increase, in a second, the museological liquidity present in some of the constituent forms of the museums supervised by the executive power of the Autonomous Region of Madeira, through its Regional Directorate for Culture. It is planned to theorize about the way these museological institutions seek, through their practices, techniques, theoretical and ideological foundations, to relate to the complexities and demands of the social context of liquid modernity, in order to develop their respective engagement with the most varied and possible public. Nevertheless, an observation is made about two designs capable of influencing the efficient liquid operationalization of any museum institution: the governmental attitude - where a necessary horizontal relationship between the supervisory bodies and the museums is defended, linking the principle of management autonomy; and organizational behavior - where the concept of a museum network is highlighted and the resulting flexibility, cooperation, sharing and articulation of common goals. Latu sensu, the research developed seeks to reflect on the idea that, given the need to adapt to the rapid and constant transformations of current times, museums should expose a critical, current and constructive view of the concept and practice of museums, exploring and relating some of their problems with broader issues emerging today: social, political, economic and cultural issues.
Books on the topic "Cameron Cruise"
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Pampalone, Donna. The Adventures of Koco Koala & Friends: Book One: Cruisin' with Cameron (The Adventures of Koco Koala & Friends). PublishAmerica, 2007.
Find full textBook chapters on the topic "Cameron Cruise"
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Richardson, Allissa V. "Black Witnessing, Body Cams, and the Enduring Fight for the Whole Truth." In Bearing Witness While Black, 179–90. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190935528.003.0009.
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Chapter 9 investigates how the moral panic inspired by Black Lives Matter triggered the body cam backlash. This additional layer of surveillance is more invasive than any other form of police video, such as cruiser dash cams, helicopter camera footage, or street corner blue lights, as Dr. Richardson has argued. Body cams also privilege the viewpoint of the officer and restore the official narrative into the hands of the powerful. Dr. Richardson explains how this next frontier of “toutveillance,” where everyone is watching everyone, could imperil the gaze of black witnesses.
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Kumar Sarkar, Pradip. "Driver Assistance Technologies." In Transportation Systems for Smart, Sustainable, Inclusive and Secure Cities [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94354.
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Topic: Driver Assistance Technology is emerging as new driving technology popularly known as ADAS. It is supported with Adaptive Cruise Control, Automatic Emergency Brake, blind spot monitoring, lane change assistance, and forward collision warnings etc. It is an important platform to integrate these multiple applications by using data from multifunction sensors, cameras, radars, lidars etc. and send command to plural actuators, engine, brake, steering etc. ADAS technology can detect some objects, do basic classification, alert the driver of hazardous road conditions, and in some cases, slow or stop the vehicle. The architecture of the electronic control units (ECUs) is responsible for executing advanced driver assistance systems (ADAS) in vehicle which is changing as per its response during the process of driving. Automotive system architecture integrates multiple applications into ADAS ECUs that serve multiple sensors for their functions. Hardware architecture of ADAS and autonomous driving, includes automotive Ethernet, TSN, Ethernet switch and gateway, and domain controller while Software architecture of ADAS and autonomous driving, including AUTOSAR Classic and Adaptive, ROS 2.0 and QNX. This chapter explains the functioning of Assistance Driving Technology with the help of its architecture and various types of sensors.
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Manoufali, Mohamed, Peng-Yong Kong, Shihab Jimaa, and Hamada Alshaer. "Wireless Mesh Communication Technologies and Protocols for a Full-View Camera Sensor Network Used in Maritime Surveillance." In Advances in Human Resources Management and Organizational Development, 125–205. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5323-6.ch006.
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Maritime oil exploration and transportation has increased more steeply due to the expansion of the world crude oil and natural gas production. The probability of oilrig pollution, burning, and explosion continues to rise. All these factors stimulate a greater danger for vessels, oil operation safety, and maritime environment. The continuous surveillance of the offshore oil fields and container vessels is essential to secure the production flow, avoid trespassing, and prevent vandalism from intruders and pirates. However, developing a large-scale camera sensor network (CSN) for a maritime surveillance is a challenging problem due to the environment complexity and network connectivity. Maritime wireless mesh networks (MWMNs) are envisaged to provide network connectivity in maritime environment and enable users to access the terrestrial communication networks. The high cost and low data-rate of satellite and other legacy maritime communication technologies and systems deployed in MWMNs pose a major limitation to establishing reliable and affordable maritime communications.
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"Red Snapper: Ecology and Fisheries in the U.S. Gulf of Mexico." In Red Snapper: Ecology and Fisheries in the U.S. Gulf of Mexico, edited by R. J. DAVID WELLS and JAMES H. COWAN. American Fisheries Society, 2007. http://dx.doi.org/10.47886/9781888569971.ch4.
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<em>Abstract.</em>—Video estimation of the relative abundance of fishes is a noninvasive method commonly used to assess fish densities. This technique can be used to characterize habitat use patterns either of fish assemblages or of a particular species of interest. The objectives of this study were to quantify relative abundance of red snapper, <em>Lutjanus campechanus</em>, and to characterize with video methodology the associated fish assemblages over different habitat types. Fishes were enumerated over sand, shell, and natural hard bottom reef habitats in the north-central Gulf of Mexico (GOM) off Alabama on quarterly cruises over a two-year period with a baited stationary underwater video camera array. Red snapper showed both significantly higher abundance and larger size over the reef habitat; however, no seasonal effects were observed, indicating temporal abundance patterns were consistent among seasons. Fish assemblages differed among habitats, with significant differences between reef and shell assemblages. Efforts to identify the species that most contributed to these differences indicated that the red snapper accounted for 59% of the overall similarity within the reef fish assemblage and 20% of the total dissimilarity between the shell and reef fish assemblages. This study highlights the utility of applying video techniques to identify the importance of sand, shell, and reef habitat types both to different life stages of red snapper, and to the different fish assemblages occupying distinct habitats in the north-central GOM.
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Revki, Andrew C. "The Environment." In A Field Guide for Science Writers. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780195174991.003.0040.
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Hindsight is usually expressed in bravado-tinged phrases. “You have it so easy now” is one. But when scanning the recent history of environmental news, the impression is just the opposite. A few decades ago, anyone with a notepad or camera could have looked almost anywhere and chronicled a vivid trail of despoliation and disregard. Only a few journalists and authors, to their credit, were able to recognize a looming disaster hiding in plain sight. But at least it was in plain sight. The challenges in covering environmental problems today are far greater, for a host of reasons. Some relate to the subtlety or complexity of most remaining pollution and ecological issues now that glaring problems have been attacked. Think of non-point-source pollution, such as runoff from countless farm fields or urban lawns, and then think of the ultimate point of the Exxon Valdez, spilling its heavy load of crude oil into the seas off the Alaskan coast. A little reflection is useful. Most journalists of my generation were raised in an age of imminent calamity. Cold War “duck and cover” exercises regularly sent us to the school basement. The prospect of silent springs hung in the wind. We grew up in a landscape where environmental problems were easy to identify and describe. Depending on where you stood along the Hudson River's banks, the shores were variously coated with adhesive, dyes, paint, or other materials indicating which riverfront factory was nearest. And, of course, the entire river was a repository for human waste, making most sections unswimmable. Smokestacks were unfiltered. Gasoline was leaded. Then things began to change. New words crept into the popular lexicon—smog, acid rain, toxic waste. At the same time, citizens gained a sense of empowerment as popular protest shortened a war. A new target was pollution. Earth Day was something newspapers wrote about with vigor, not an anachronistic, even quaint, notion. Republican administrations and bipartisan Congresses created a suite of laws aimed at restoring air and water quality and protecting wildlife. And, remarkably, those laws began to work. Right through the 19805 the prime environmental issues of the day—and thus the news—continued to revolve around iconic incidents, mainly catastrophic in nature.
Conference papers on the topic "Cameron Cruise"
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Nakajo, Hidehiko, Taro Aoki, Takashi Murashima, Satoshi Tsukioka, Tadahiro Hyakudome, Tadahiko Ida, and Tatsumasa Kabeno. "Long Cruising Trial of AUV “URASHIMA”." In ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28367.
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A Deep Sea Cruising AUV “URASHIMA” has been developed by JAMSTEC since 1998. The dimensions and weight are 10m (L), 1.3m (W), 1.5m (H), and about 7.5 tons in air. A main power source device system of AUV “URASHIMA” is a large capacity of lithium-ion (Li-ion) rechargeable battery system or Solid Polymer Electrolyte Fuel Cell (PEFC) system. AUV “URASHIMA” will be able to cruise for about 100km with Li-ion battery system and it will cruise for about 300km with fuel cell system. The cruising trial used by the fuel cell system will start at the end of 2002. The instruments for science researches are an automatic multi-water-sampling system, a CTDO, a side-scan sonar, a digital still camera with a thermoelectrically cooled CCD image sensor, a TV camera, and so on. Three operation modes, which are UROV mode, acoustic remote control mode and autonomous mode, are available. Those three kinds of modes are used acceding to each development stage and ocean researches. UROV mode is to monitor the state of the vehicle with fiber optics. At the first development stage of AUV “URASHIMA”, we carried out long cruising trial for about 100km and maximum operational depth trial at 3,500m used by Li-ion rechargeable battery system. URASHIMA was succeeded to reach at 3,518m depth of the seafloor at the sea trial of August 2001. We also carried out long cruising trial that was controlled by autonomous mode. Then, URASHIMA was cruised 70km distance at the sea trial of December 2001. We will have a next sea trail on May 2002 for 100km long cruising test. At the next development stage, we will carried out long cruising trial for 300km used by the fuel cell system.
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Seyed Yaghoubi, A., P. Begeman, G. Newaz, D. Board, Y. Chen, and O. Faruque. "Generic Steel Vehicle Front Bumper and Crush Can Assemblies Subjected to a Rigid High Speed Offset Frontal Impact." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65044.
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This study presents experimental investigations of generic steel Front Bumper and Crush Can (FBCC) assemblies subjected to a 40% offset frontal impact. As automotive industries aim to reduce overall vehicle weight by applying lighter-weight materials to its structures, component-level studies become important. Computer aided models are valuable tools to complement physical testing by assessing the performances of these structures. Due to the lack of studies on component-level tests with FBCCs, a novel component-level test procedure would be useful to aid in CAE correlation. A sled-on-sled testing method was used to perform all the tests reported here. Impact speed was optimized such that there was no bottoming-out force for this type of test. Three high-speed cameras (HSCs), an infrared (IR) thermal camera, and several accelerometers were utilized to study impact performance of the FBCC structures. The results showed that time histories of displacement and velocity from video tracking and accelerometers were in good agreement. The force-time history and force-displacement curves from different FBCC specimens were consistent and in good agreement with respect to each other with a low coefficient of variation calculated. Post-impact deformation pattern analysis of the samples showed consistent crush patterns. Heat was generated and dissipated at the tip of the crush can and progressed as the can started to fold.
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Green, William E., and Paul Y. Oh. "Towards Autonomous Fixed-Wing MAVs With Hovering Capabilities." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79735.
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Near-Earth environments, such as forests, caves, tunnels, and urban structures make reconnaissance, surveillance and search-and-rescue missions dificult and dangerous to accomplish. Micro-Air-Vehicles (MAVs), equipped with wireless cameras, can assist in such missions by providing real-time situational awareness. This paper describes an additional flight modality enabling fixed-wing MAVs to supplement existing endurance superiority with hovering capabilities. This secondary flight mode can also be used to avoid imminent collisions by quickly transitioning from cruise to hover ight. A sensor suite which will allow for autonomous hovering by regulating the aircraft’s yaw, pitch and roll angles is also described.
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Dixit, Y., P. Begeman, G. Newaz, D. Board, Y. Chen, and O. Faruque. "Full Frontal Impact Comparison of Steel and Carbon Fiber Composite Front Bumper Crush Can (FBCC) Structures." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87110.
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This study compares the deformation characteristics of steel and carbon fiber composite (CFC) front bumper crush can (FBCC) assemblies when subjected to a full-overlap frontal impact into a rigid wall. Both the steel and composite bumper tests were conducted using a sled-on-sled testing method. Several high-speed cameras (HSCs) and accelerometers were used to gather kinematics data. The applied forces were measured using a load cell wall. For each test, the collective set of data was filtered, sorted, and analyzed to compare the performance of the steel and CFC bumpers. Similarities in Acceleration-Time plots suggested resemblance in the deformation patterns for both types of bumper systems. The difference observed in the velocity and displacement time-histories was because of the brittle nature of the composite material. The velocity-time history of the CFC FBCC had two distinct patterns, events suggesting adhesive bond failure between the bumper beam and the crush cans, which was validated through video tracking. Post-impact photographs showed a clear difference between the material behavior of composite and steel bumpers when subjected to high-velocity impact. The steel bumper beam was bent uniformly with intact, equally crushed crush cans. The composite beam was cracked in the middle and was detached from the crush cans.
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Benetazzo, Alvise, Filippo Bergamasco, Francesco Barbariol, Andrea Torsello, Sandro Carniel, and Mauro Sclavo. "Towards an Operational Stereo System for Directional Wave Measurements From Moving Platforms." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24024.
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Stereo video imaging of water surface has become an effective instrumentation to gather wind waves 3-D data from small to medium range spatial scales. Indeed, recent applications of stereo techniques provided new insights of space-time distributions of sea wave elevations, small scale wave statistics, and directional wave spectra. Like most photogrammetric applications, an accurate calibration of the optical acquisition machinery is required to provide a low-noise, precise and reliable surface reconstruction adequate to extract meaningful wavy surfaces. However, for practical open field applications, there is a strong interest to provide a calibration procedure apt to be performed in an uncomfortable environment in which it may be unfeasible to take apart or even physically access the device. Here, we propose a stereo pipeline suitable for 3-D wave measurements from fixed and moving platforms. In particular, within the Wave Acquisition Stereo System (WASS) framework, we contemplated a self-calibration technique for a robust estimation of the stereo extrinsic parameters, a fast dense stereo correspondence algorithm, and a two-step correction of the cameras motion. As for other applications, wave information collected by WASS includes synthetic wave parameters (e.g., significant wave height, wave periods, and directions), wavenumber and frequency-direction spectra, spatial distribution of wave elevations, heights, and lengths. The new pipeline features has been firstly assessed by installing WASS on top of the “Acqua Alta” oceanographic tower in the northern Adriatic Sea (Italy) and comparing WASS measurements against those acquired at the tower with reference instrumentation. Afterwards, the stereo system has been mounted on board the R/V “Urania” during a cruise on April 2013 in the southern Adriatic Sea. During the cruise, to correct for ship’s motion, WASS has been synchronized to the motion unit used for the vessel’s navigation. For validation, sea wave state gathered by WASS has been compared to theoretical models and results from the numerical wave model SWAN. Results presented show that the accuracy of 3-D waves provided by the new algorithms is comparable to that of other WASS applications, although significantly reducing the installation effort and the computational time by more than one order of magnitude. Additionally, encompassing for ship’s motion makes stereo system a perspective instrumentation for operational wave measuring from research and opportunity vessels. The manuscript is completed by a discussion on the limitations and troubleshooting related to the proposed pipeline.
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Dixit, Y., P. Begeman, G. S. Dhaliwal, G. Newaz, D. Board, Y. Chen, and O. Faruque. "Crashworthiness Performance of Carbon Fiber Composite (CFC) Vehicle Front Bumper Crush Can (FBCC) Assemblies Subjected to High Speed 40% Offset Frontal Impact." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70357.
Full textAbstract:
This research article presents the crashworthiness response of carbon fiber composite front bumper crush can (FBCC) assembly subjected to 40% offset frontal impact loading. Automobile manufacturers continue to strive for overall vehicle weight reduction while maintaining or enhancing safety performance. Therefore, the physical testing of lightweight materials becomes extremely important under a crash scenario in order to apply them to automotive structures to reduce the overall weight of the vehicle. In this study carbon fiber/epoxy lightweight composite material is chosen to develop frontal bumper beam crush can assemblies. Due to lack of available studies on carbon fiber composite FBCCs assemblies under frontal offset crash scenario, a new component-level experimental study is conducted in order to develop data that will provide assistance to CAE models for better correlation. A sled-on-sled testing method was utilized to perform tests in this study. 40 % offset frontal tests on FBCC structures were conducted by utilizing three high-speed cameras (HSCs), several accelerometers and load wall. Impact histories i.e. crash pulse, force-time history, force-displacement, impact characteristics and deformation patterns from all FBCC tests were consistent. The standard deviation and coefficient of variance for the energy absorbed were very low suggesting the repeatability of the 40% offset tests. Excellent correlation was achieved between video tracking and accelerometers results for time histories of displacement and velocity. Post-impact photographs showed the progressive crushing of composite crush cans, bumper beam/crush can adhesive joint failure located on unimpacted side and breakage of the bumper beam due to the production of shear stresses as it is stretched due to its curvature after hitting the sled.
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Dixit, Y., P. Begeman, G. S. Dhaliwal, G. Newaz, D. Board, Y. Chen, and O. Faruque. "Full Frontal Crashworthiness of Carbon Fiber Composite Front Bumper Crush Can (FBCC) Structures." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70354.
Full textAbstract:
This research study highlights the testing method and relevant results for assessing impact performance of a carbon fiber composite front bumper crush can (FBCC) assembly subjected to full frontal crash loading. It becomes extremely important to study the behavior of lightweight composite components under a crash scenario in order to apply them to automotive structures to reduce the overall weight of the vehicle. Computer-aided engineering (CAE) models are extremely important tools to virtually validate the physical testing by assessing the performances of these structures. Due to lack of available studies on carbon fiber composite FBCCs assemblies under the frontal crash scenario, a new component-level test approach would provide assistance to CAE models and better correlation between results can be made. In this study, all the tests were performed by utilizing a sled-on-sled testing method. An extreme care was taken to ensure that there is no bottoming-out force for this type of test while adjusting the impact speed of sled. Full frontal tests on FBCC structures were conducted by utilizing five high-speed cameras (HSCs), several accelerometers and a load wall. Excellent correlation was achieved between video tracking and accelerometers results for time histories of displacement and velocity. The standard deviation and coefficient of variance for the energy absorbed were very low suggesting the repeatability of the full frontal tests. The impact histories of FBCC specimens were consistent and in excellent agreement with respect to each other. Post-impact photographs showed the consistent crushing of composite crush cans and breakage of the bumper beam from middle due to the production of tensile stresses stretched caused by straightening of the bumper curvature after hitting the load wall.
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Martinez, Eloy, David Tyrell, and John Zolock. "Rail-Car Impact Tests With Steel Coil: Car Crush." In IEEE/ASME 2003 Joint Rail Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/rtd2003-1656.
Full textAbstract:
Two grade-crossing impact tests were conducted in June 2002 at the Federal Railroad Administration’s (FRA’s) Transportation Technology Center in Pueblo, Colorado as part of the FRA’s research into passenger equipment crashworthiness. In both of these tests a cab car moving at approximately 14 mph impacted a standing coil of steel supported by a frangible table. The coil was positioned such that the left-side corner post of the cab car sustained the brunt of the impact. The cars were instrumented to measure the accelerations of the carbody, the displacements of the suspensions, the displacements of the corner posts, and the strains in selected structural members. The coil was instrumented to measure its three-dimensional acceleration, including yaw, pitch, and roll. On-board and wayside high-speed film and video cameras were used to record the impact. On June 4, 2002 a cab car compliant with general industry practice circa 1999 was tested and on June 7, 2002 a cab car compliant with current FRA regulations and American Public Transportation Association (APTA) Standards and Recommended Practices for Rail Passenger Equipment was tested. The tests themselves were conducted in response to a recommendation from the APTA Passenger Rail Equipment Safety Standards (PRESS) Committee to measure the crashworthiness performance of alternative cab car end structures. During the test of the 1990’s design, the corner post failed, eliminating the survival space for the operator. During the test of the state-of-the-art design cab car, the corner post remained attached and deformed less than 9 inches, preserving space for the operator. Prior to the test, crush analyses were conducted to determine the force/crush characteristics of the two end structure designs, as well as their modes of deformation. Collision dynamics analyses were also conducted to determine the extent of crush and the gross motion of the car and coil. This paper describes the analysis of the crush behaviors of the two different end structure designs. A companion paper describes the results of the collision dynamics analyses. The crush of the cars was analyzed using detailed finite-element models. The impact end of each car was modeled, including approximately 1/4 of the length of the car. The back end of the cab car model was fixed, and its end structure was impacted by an initially moving cylinder with the same mass and dimensions as the steel coil used in the tests. Prior to the tests, runs were made with the models with and without material failure. This approach allowed calculation of an upper bound and a lower bound on the force/crush characteristics. The pre-test predictions of the analysis of the state-of-the art car including material failure very closely match the results of the test for the force/crush characteristic, strains at the measured locations, the geometry of the deformed structure, and the locations and extent of material failure. The pre-test predictions of the analysis of the 1990’s design also closely match the test measurements, however, the extent of material failure predicted was slightly less than observed in the test; failure of the corner post was predicted to occur at a speed of a 1.6 mph (approximately 10%) greater than the test speed. A more sophisticated implementation of the material failure modeling helped bring the model results into very close agreement with the test measurements.
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Watanabe, Toshiaki, Hironori Maehara, Masahiko Otsuka, and Shigeru Itoh. "Basic Study on the Crushing of Frozen Soil by Shock Loading." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26430.
Full textAbstract:
The aim of study is to confirm a new technique that can crush the frozen soil and/or ice block using underwater shock wave generated by the underwater explosion of explosive. This technique can lead to the earlier sowing, which can have the larger harvest because the duration of sunshine increases. Especially, in Hokkaido prefecture, Japan, if the sowing is carried out in April, we can expect to have 150% of harvest in the ordinary season. This technique is effective against the cold regions. For example, Korea, China, Mongolia, Russia, Norway, and Sweden, etc. At first, we carried out experiments usung a detonating fuse and ice block. The process of ice breaking was observed by means of a high-speed camera. In order to check about that influence we tried to give an actual frozen soil a shock wave.
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Renze, Kevin J. "Accident/Incident Reconstruction and Visualization." In 2018 Joint Rail Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/jrc2018-6265.
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Factual evidence from locomotive event data recorders (EDR), locomotive image data recorders, accident site surveys, witness marks, rail equipment, track structure, photographs, video cameras, AEI readers, hot wheel or hot bearing detectors, wayside signal bungalows, train consist documents, and radio communication is integrated, validated, and visualized in a three-dimensional model environment. The goal is to build a physics-based, data-driven model of train position as a function of time to enhance the documentation, investigation, understanding, and analysis of in-service train derailments. Methods to construct, validate, and interrogate time-accurate, interactive visualizations of train movements for partial and complete train consists are discussed and demonstrated. In-service freight train derailments that occurred in Hoxie, Arkansas (offset frontal collision between opposing freight trains), Casselton, North Dakota (unit grain train derailment with car fouling opposing mainline track and subsequent crude oil unit train head-on collision), and Graettinger, Iowa (unit ethanol train derailment) are used to illustrate the accident reconstruction method. Similar vehicle path reconstructions for recent highway, aviation, and marine investigations are also presented.
Reports on the topic "Cameron Cruise"
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Taylor, R. B. Cruise Report 86303 : Coastal Surveys in the Central Queen Elizabeth Islands (Dundas, Devon, Somerset, Cameron, and Lowther Islands, NWT). Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1987. http://dx.doi.org/10.4095/130319.
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