Industrial Photogrammetry—Its Application to Shipbuilding

Michael J. Gunn; Ronald S. Hicks

doi:10.5957/mt1.1988.25.3.229

Industrial Photogrammetry—Its Application to Shipbuilding

Marine Technology and SNAME News ◽

10.5957/mt1.1988.25.3.229 ◽

1988 ◽

Vol 25 (03) ◽

pp. 229-236

Author(s):

Michael J. Gunn ◽

Ronald S. Hicks

Keyword(s):

Structural Steel ◽

Three Dimensional ◽

Practical Applications ◽

Physical Objects

Photogrammetry is the science of acquiring and interpreting three-dimensional data of physical objects by measuring and analyzing their images on photographic plates. The development of this technology since the mid-seventies has increased its credibility for application to industrial and shipbuilding use. Analytical photogrammetry is now routinely employed in shipbuilding for tasks as diverse as predicting the fit-up of structural steel assemblies prior to their joining, verifying the circularity of submarine hulls, and checking the alignment of catapult trough components on aircraft carriers. The authors address the practical applications of photogrammetric technology, and identify the reliability, versatility, and productivity of photogrammetric surveying when applied to shipbuilding.

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Three-dimensional Graphene Coated Shape Memory Polyurethane Foam with Fast Responsive Performance

Journal of Materials Chemistry C ◽

10.1039/d1tc01315g ◽

2021 ◽

Author(s):

Tianjiao Wang ◽

Jun Zhao ◽

Chuanxin Weng ◽

Tong Wang ◽

Yayun Liu ◽

...

Keyword(s):

Shape Memory ◽

Polyurethane Foam ◽

Three Dimensional ◽

Shape Memory Polymers ◽

Practical Applications ◽

External Stimuli ◽

Shape Memory Polyurethane

Shape memory polymers (SMPs) that change shapes as designed by external stimuli have become one of the most promising materials as actuators, sensors, and deployable devices. However, their practical applications...

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Automatic Detection Technology of Sonar Image Target Based on the Three-Dimensional Imaging

Journal of Sensors ◽

10.1155/2017/8231314 ◽

2017 ◽

Vol 2017 ◽

pp. 1-8 ◽

Cited By ~ 3

Author(s):

Wanzeng Kong ◽

Jinshuai Yu ◽

Ying Cheng ◽

Weihua Cong ◽

Huanhuan Xue

Keyword(s):

Data Storage ◽

3D Imaging ◽

Signal To Noise Ratio ◽

Three Dimensional ◽

Automatic Detection ◽

Classification Model ◽

Image Detection ◽

Practical Applications ◽

Sonar Image ◽

Detection Technology

With 3D imaging of the multisonar beam and serious interference of image noise, detecting objects based only on manual operation is inefficient and also not conducive to data storage and maintenance. In this paper, a set of sonar image automatic detection technologies based on 3D imaging is developed to satisfy the actual requirements in sonar image detection. Firstly, preprocessing was conducted to alleviate the noise and then the approximate position of object was obtained by calculating the signal-to-noise ratio of each target. Secondly, the separation of water bodies and strata is realized by maximum variance between clusters (OTSU) since there exist obvious differences between these two areas. Thus image segmentation can be easily implemented on both. Finally, the feature extraction is carried out, and the multidimensional Bayesian classification model is established to do classification. Experimental results show that the sonar-image-detection technology can effectively detect the target and meet the requirements of practical applications.

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Graphed equilibrium parameters of channels formed in sediment

Canadian Journal of Civil Engineering ◽

10.1139/l80-008 ◽

1980 ◽

Vol 7 (1) ◽

pp. 93-104 ◽

Cited By ~ 1

Author(s):

A.W. Peterson ◽

T. Blench

Keyword(s):

Subject Matter ◽

Three Dimensional ◽

Numerical Data ◽

Reference List ◽

Laboratory Measurements ◽

Practical Applications ◽

Circular Pipes ◽

The Subject ◽

Specialized Mathematics ◽

Major Reference

This paper, for river engineers and their environmental counterparts, presents and explains the origin and potential of four-dimensional charts that smooth most of the world's numerical data obtained from the equilibrium dimensions of sand rivers, gravel rivers, and laboratory flumes. These charts aim to provide a practical service comparable with that provided by factual plots on the comprehensive classic three-dimensional Stanton friction-factor diagram for circular pipes and clean Newtonian fluid. In the river problems, especially, the existence of different phases (whose transitions are not susceptible to formulation), the inadequacies of textbook theories even for simple phases, and the unavoidable imperfections of both field and laboratory measurements combine to prevent responsible design. The remedy is a graphing of total information backed by references from which its reliability and practicability can be assessed.The references have been chosen to contain principal information in the forms of: (i) usable photos, graphs, and tables; (ii) explanations free from specialized mathematics and speculative arguments; and (iii) papers with discussions, authors' replies, and further useful references (since a major reference list would be too long for this paper). Because condensation has had to be extreme the authors will be glad to attempt answers to discussions and questions on the subject matter, its practical applications, and its implications in teaching and research.

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The semianalytical finite element method as applied to three-dimensional thermoelastoplastic prismatic bodies. Report 2. Practical applications

Strength of Materials ◽

10.1007/bf00768561 ◽

1992 ◽

Vol 24 (12) ◽

pp. 745-748

Author(s):

A. I. Gulyar ◽

E. E. Maiboroda ◽

A. S. Sakharov

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Three Dimensional ◽

Practical Applications ◽

Prismatic Bodies ◽

Element Method

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Intermeshing: A New Concept For Rapid Steel Erection

IABSE Congress, New York, New York 2019: The Evolving Metropolis ◽

10.2749/newyork.2019.0187 ◽

2019 ◽

Author(s):

Salam Al-Sabah ◽

Debra Laefer ◽

Linh Truong-Hong

Keyword(s):

Structural Steel ◽

Three Dimensional ◽

Steel Bridges ◽

Digital Manufacturing ◽

Initial Analysis ◽

Contact Points ◽

Steel Connection ◽

Welding Forces ◽

And Robotics ◽

Steel Cutting

<p>Three-dimensional intermeshing of steel enabled by advanced digital manufacturing holds the potential to radically change how steel bridges and buildings are connected. This paper presents the concept of the first universal structural steel connection in over 100 years. The proposed Intermeshed Steel Connection (ISC) exploits recent advances in steel cutting technologies and robotics to shape member ends precisely. This vastly reduces on-site bolting and welding. Forces are transferred through common bearing surfaces at multiple contact points. The new connection is designed to accelerate structural steel deployment and offer better disassembly options. This paper introduces the geometry, manufacturing, and initial analysis of the connection approach, which holds the potential to be robust, secure, scalable, and faster to erect.</p>

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Synthesis, Characterization and Photocatalytic Activity of Nanocrystalline First Transition-Metal (Ti, Mn, Co, Ni and Zn) Oxisde Nanofibers by Electrospinning

Applied Sciences ◽

10.3390/app9010008 ◽

2018 ◽

Vol 9 (1) ◽

pp. 8 ◽

Cited By ~ 5

Author(s):

Yu Chen ◽

Weipeng Lu ◽

Yanchuan Guo ◽

Yi Zhu ◽

Haojun Lu ◽

...

Keyword(s):

Electron Microscope ◽

Transition Metal ◽

Metal Oxide ◽

Specific Surface ◽

Three Dimensional ◽

Photogenerated Electron ◽

Practical Applications ◽

Surface Areas ◽

Tio2 Nanofiber ◽

Transmission Electron

In this work, five nanocrystalline first transition-metal (Ti, Mn, Co, Ni and Zn) oxide nanofibers were prepared by electrospinning and controlled calcination. The morphology, crystal structure, pore size distribution and specific surface area were systematically studied by scanning electron microscope (SEM), transmission electron microscope (TEM), surface and pore analysis, and thermo gravimetric analyzer (TGA). The results reveal that the obtained nanofibers have a continuously twisted three-dimensional scaffold structure and are composed of neat nanocrystals with a necklace-like arrangement. All the samples possess high specific surface areas, which follow the order of NiO nanofiber (393.645 m2/g) > TiO2 nanofiber (121.445 m2/g) > ZnO nanofiber (57.219 m2/g) > Co3O4 nanofiber (52.717 m2/g) > Mn2O3 nanofiber (18.600 m2/g). Moreover, the photocatalytic degradation of methylene blue (MB) in aqueous solution was investigated in detail by employing the five kinds of metal oxide nanofibers as photocatalysts under ultraviolet (UV) irradiation separately. The results show that ZnO, TiO2 and NiO nanofibers exhibit excellent photocatalytic efficiency and high cycling ability to MB, which may be ascribed to unique porous structures and the highly efficient separation of photogenerated electron-hole pairs. In brief, this paper aims to provide a feasible approach to achieve five first transition-metal oxide nanofibers with excellent performance, which is important for practical applications.

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Three-dimensional stable lithium metal anode with nanoscale lithium islands embedded in ionically conductive solid matrix

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1619489114 ◽

2017 ◽

Vol 114 (18) ◽

pp. 4613-4618 ◽

Cited By ~ 170

Author(s):

Dingchang Lin ◽

Jie Zhao ◽

Jie Sun ◽

Hongbin Yao ◽

Yayuan Liu ◽

...

Keyword(s):

High Power ◽

Power Output ◽

Three Dimensional ◽

Rechargeable Batteries ◽

Solid Matrix ◽

Side Reactions ◽

Surface Protection ◽

Metal Anode ◽

Practical Applications ◽

Significant Step

Rechargeable batteries based on lithium (Li) metal chemistry are attractive for next-generation electrochemical energy storage. Nevertheless, excessive dendrite growth, infinite relative dimension change, severe side reactions, and limited power output severely impede their practical applications. Although exciting progress has been made to solve parts of the above issues, a versatile solution is still absent. Here, a Li-ion conductive framework was developed as a stable “host” and efficient surface protection to address the multifaceted problems, which is a significant step forward compared with previous host concepts. This was fulfilled by reacting overstoichiometry of Li with SiO. The as-formed LixSi–Li2O matrix would not only enable constant electrode-level volume, but also protect the embedded Li from direct exposure to electrolyte. Because uniform Li nucleation and deposition can be fulfilled owing to the high-density active Li domains, the as-obtained nanocomposite electrode exhibits low polarization, stable cycling, and high-power output (up to 10 mA/cm2) even in carbonate electrolytes. The Li–S prototype cells further exhibited highly improved capacity retention under high-power operation (∼600 mAh/g at 6.69 mA/cm2). The all-around improvement on electrochemical performance sheds light on the effectiveness of the design principle for developing safe and stable Li metal anodes.

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Three-Dimensional Holey-Graphene Architectures for Highly Sensitive Enzymatic Electrochemical Determination of Hydrogen Peroxide

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2019.16613 ◽

2019 ◽

Vol 19 (11) ◽

pp. 7404-7409 ◽

Cited By ~ 4

Author(s):

Aihua Jing ◽

Gaofeng Liang ◽

Hao Shi ◽

Yixin Yuan ◽

Quanxing Zhan ◽

...

Keyword(s):

Electron Microscopy ◽

Hydrogen Peroxide ◽

Graphene Oxide ◽

Three Dimensional ◽

Electrochemical Determination ◽

High Specific Surface Area ◽

3D Graphene ◽

Practical Applications ◽

Transmission Electron ◽

Mild Defect

Three-dimensional (3D) graphene with high specific surface area, excellent conductivity and designed porosity is essential for many practical applications. Herein, holey graphene oxide with nano pores was facilely prepared via a convenient mild defect-etching reaction and then fabricated to 3D nanostructures via a reduction method. Based on the 3D architectures, a novel enzymatic hydrogen peroxide sensor was successfully fabricated. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were used to characterize the 3D holey graphene oxide architectures (3DHGO). Cyclic voltammetry (CV) was used to evaluate the electrochemical performance of 3DHGO at glassy carbon electrode (GCE). Excellent electrocatalytic activity to the reduction of H2O2 was observed, and a linear range of 5.0×10-8~5.0×10-5 M with a detection limit of 3.8×10-9 M was obtained. These results indicated that 3DHGO have potential as electrochemical biosensors.

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