US 11,724,443 B2
Additive manufacture-assisted method for making structural elements having controlled failure characteristics
Seyed Mohammad Sajadi, Houston, TX (US); AshokKumar Meiyazhagan, Houston, TX (US); Peter Boul, Houston, TX (US); Muhammad Rahman, Houston, TX (US); Carl Thaemlitz, Houston, TX (US); and Pulickel Ajayan, Houston, TX (US)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA); and WILLIAM MARSH RICE UNIVERSITY, Houston, TX (US)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA); and WILLIAM MARSH RICE UNIVERSITY, Houston, TX (US)
Filed on May 14, 2020, as Appl. No. 16/874,449.
Prior Publication US 2021/0354366 A1, Nov. 18, 2021
Int. Cl. B29C 64/118 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 80/00 (2015.01); B33Y 70/10 (2020.01); E21B 47/005 (2012.01); B32B 13/12 (2006.01); B32B 27/30 (2006.01); B29K 29/00 (2006.01); B29K 105/00 (2006.01); C04B 7/02 (2006.01)
CPC B29C 64/118 (2017.08) [B32B 13/12 (2013.01); B32B 27/306 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 70/10 (2020.01); B33Y 80/00 (2014.12); E21B 47/005 (2020.05); B29K 2029/04 (2013.01); B29K 2105/0079 (2013.01); B32B 2307/202 (2013.01); B32B 2315/06 (2013.01); C04B 7/02 (2013.01); E21B 2200/01 (2020.05)] 9 Claims
OG exemplary drawing
 
1. A process for making a layered multi-material structural element having controlled mechanical failure characteristics, the process comprising the steps of:
supplying a cementitious layer and forming a polymer layer on the cementitious layer by additive manufacture such that the polymer layer has a first thickness and the cementitious layer has a second thickness;
wherein the polymer layer comprises a polymer comprising a liquid crystal elastomer and the cementitious layer comprises a cementitious material;
allowing the polymer from the polymer layer to suffuse into the cementitious layer for a period of time to obtain a suffused zone in the cementitious layer such that the suffused zone has a third thickness that is less than half the second thickness; and
using a stimulus to manipulate the suffused zone, wherein the stimulus is selected from the group consisting of a temperature change, electric field, magnetic field, radiation, and any combination of the same.