National University of Singapore

Maritime and Port Authority of Singapore

Jurong Consultants Pte Ltd.

Yoo Sang Choo

Li Lu

Yoke San Wong

En Tang Kang

Kah Bin Lim

Tianyun Wu

Yeh Ching Andrew Nee

Ying His Jerry Fuh

Ying Kit Chew

Ah Cheong Toh

Tetsuo Miyazawa

Ah Mui Hee

Chee Leong Teo

Chien Ming Wang

Han Tong Loh

Kok Keng Ang

A pontoon-type floating structure comprising an upper deck that is to be maintained above water level and that is to receive and support a load by the load resting thereon; and a horizontal array of chambers disposed underneath the upper deck, with the chambers providing a first set of chambers that provide the structure with buoyancy, and a second set of chambers with water having access thereto so that the second set of chambers, under steady state conditions, do not provide buoyancy.

Pontoon-type floating structure

A method for determining the areas of resin to be cured in an optical stereolithography process for rapid prototyping using sequential laser curing of layers of a resin having a selected thickness to produce a desired shape of cured resin. The method includes the steps of generating a computer model of desired shape and dividing the model into layers of thickness equal to the thickness of the layers each defining an area of resin to be cured. A set of layers including and sequentially adjacent an intermediate layer is selected and the areas in the intermediate layer of resin which would be oversized by laser curing of layers later in the curing sequence is determined. The 2-D layer data used to build a 3-D model is modified to compensate for the oversizing and the steps repeated by sequentially selecting sets of layers to include substantially all of the layers as the intermediate layer. The sets are sequentially selected with each subsequent set having the intermediate layer being the layer adjacent the intermediate layer of the previously selected set. The first selected set includes the first layer to be cured and the sequential subsequent sets respectively include as the intermediate layer the subsequently cured adjacent layer.

Method for determining resin curing areas in an optical stereolithography process

Growing community of inventors

Singapore, Singapore

Yoo Sang Choo