Additive Manufacturing in Underwater Applications

Applied Sciences, Год журнала: 2024, Номер 14(4), С. 1346 - 1346

Опубликована: Фев. 6, 2024

Additive manufacturing (AM), commonly named 3D printing, is a promising technology for many applications. It the most viable option widespread use in automated construction processes, especially harsh environments such as underwater. Some contemporary applications of this have been tested underwater environments, but there are still number problems to be solved. This study focuses on current development printing applications, including required improvements itself, well new materials. Information about involving part fabrication via AM also provided. The article based literature review that supplemented by case studies practical main findings show usage additive can bring advantages—for instance, increasing work safety, limiting environmental burden, and high efficiency. Currently, only few prototype developed. However, tool develop new, effective larger scale. materials used, require optimization.

Язык: Английский

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Assessment of the utility of underwater hyperspectral imaging for surveying and monitoring coral reef ecosystems

Scientific Reports, Год журнала: 2023, Номер 13(1)

Опубликована: Ноя. 30, 2023

Abstract Technological innovations that improve the speed, scale, reproducibility, and accuracy of monitoring surveys will allow for a better understanding global decline in tropical reef health. The DiveRay, diver-operated hyperspectral imager, complementary machine learning pipeline to automate analysis imagery were developed this purpose. To evaluate use imager underwater, automated classification benthic taxa communities was tested. Eight reefs Guam surveyed two approaches employed: high taxonomic resolution categories broad categories. results from DiveRay validated against data concurrently conducted photoquadrat determine their utility as proxy surveys. classifications did not reliably predict when compared those obtained by standard analysis. At level categories, however, comparable This particularly true estimating scleractinian coral cover, which accurately predicted six out eight sites. annotation libraries generated study insufficient train model fully account biodiversity on Guam’s reefs. As such, prediction is expected with additional surveying image annotation. first directly compare underwater scanning traditional survey techniques across multiple sites levels identification different degrees certainty. Our findings show dependent well-annotated library, imaging can be used quickly, repeatedly, monitor map dynamic using

Язык: Английский

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A Review of Additive Manufacturing Techniques in Artificial Reef Construction: Materials, Processes, and Ecological Impact

Applied Sciences, Год журнала: 2025, Номер 15(8), С. 4216 - 4216

Опубликована: Апрель 11, 2025

In recent years, additive manufacturing technologies have been employed for ecological projects, especially those connected with artificial reefs. This approach brings a lot of advantages, including the design more complex structures, surfaces fitted to needs water organisms. technology can effectively support and engineering, in restoration efforts. The main aim this article is demonstrate state art further perspectives development coral based on critical analysis literature, supported by selected case studies. describes current used creation reefs, putting emphasis manufacturing, evaluates currently materials, summarizes influence ecosystems through It also discusses challenges limitations 3D printing reefs as well presents trends directions. most important findings show that analyzed field promising interdisciplinary research area practical implementations require collaboration between specialists from different branches.

Язык: Английский

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Coral reefs in transition: Temporal photoquadrat analyses and validation of underwater hyperspectral imaging for resource-efficient monitoring in Guam

PLoS ONE, Год журнала: 2024, Номер 19(3), С. e0299523 - e0299523

Опубликована: Март 19, 2024

The island of Guam in the west Pacific has seen a significant decrease coral cover since 2013. Lafac Bay, marine protected area northeast Guam, served as reference site for benthic communities typical forereefs on windward side island. staghorn Acropora abrotanoides is dominant and characteristic ecosystem engineer forereef exposed shorelines. Photoquadrat surveys were conducted 2015, 2017, 2019, diver-operated hyperspectral imager (i.e., DiveRay) was used to survey same transects 2019. Machine learning algorithms develop an automated pipeline assess 10 biotic abiotic categories 2019 based imagery. scleractinian corals did not differ between 2015 2017 despite being subjected series environmental disturbances these years. Surveys documented almost complete decline habitat-defining (a practically disappearance from about 10% cover), (~75%) other corals, increase (~55%) combined bare substrate, turf algae, cyanobacteria. drastic change community composition suggests that reef at Bay transitioning algae-dominated community. However, capacity this recover previous transition could be reversed, making excellent candidate long-term monitoring. Community analyses showed no difference automatically classified estimates derived scans those photoquadrats. These findings suggest underwater imagers can efficient effective tools fast, frequent, accurate monitoring dynamic communities.

Язык: Английский

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Exploration of Underwater Image Spectral Reconstruction Using a Multi-Scale Large Kernel Based Network

IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium, Год журнала: 2024, Номер unknown, С. 7580 - 7583

Опубликована: Июль 7, 2024

Язык: Английский

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Establishing complexity targets to enhance artificial reef designs

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Сен. 27, 2024

Язык: Английский

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