Qingdao University of Technology

Design, Fabrication, and Performance Study of 3D‐Printed Multi‐Tooth Interlocking Discrete Functionally Gradient Stretchable Substrates

ABSTRACT Flexible hybrid electronics (FHE), which integrate the deformation capability of flexible substrates with the functional stability of rigid components, show broad application prospects in wearable devices and aerospace fields. Among these, functionally graded substrates...

Insights into Early-Age Interfacial Bonding Improvement of Polymer-Modified Sulfoaluminate Cement Mortar: Roles of Polymer Film Formation and Hydration Regulation

In this study, a polymer-modified fast-hardening and early-strength cement-based repair material was proposed, using the polymer cellulose ether (HPMC), polymer dispersible polymer powder (VAE) and silica fume. The optimal mixing ratio of the three polymers was designed by an ort...

Surface Strain Evolution and Cracking Behavior of Concrete Under Non-Uniform Corrosion-Induced Expansion Monitored by Distributed Fiber Optics

Cover cracking induced by steel corrosion is a critical issue governing the durability degradation of reinforced concrete structures in marine environments. The crack initiation and propagation processes dominated by non-uniform rust expansion stress fields urgently require high-...

An efficient surrogate-assisted hybrid optimization framework for polymer flooding management

<title>Abstract</title> Reservoir injection-production optimization plays a critical role in enhancing recovery in high-water-cut oilfields. While polymer flooding improves development efficiency by increasing viscosity and controlling fluid flow, its optimization faces several c...