Competition of strategy between China and India in the Indian Ocean nowadays

In recent years, the Indian Ocean Region has become central to the strategies of major global powers due to a series of geoeconomic and geopolitical factors. While China increased its influence in this region by opening up connections within the framework of the BRI, offering loans, and constructing infrastructures, India, with its "neighborhood first" policy, also preserved its traditional sphere of influence. Due to the rising strategic competition by powers, Indian Ocean Region was at the crossroads of great power competition, especially the strategic competition between China and India. The article was based on a comparative approach and simultaneously compared India and China's influence in each field in the Indian Ocean region. The analysis showed that competition between China and India in the context of the two countries still has many tensions, leading to each country's efforts to strengthen military control over the Indian Ocean region. However, this competition tends to serve as a balance between the two countries, motivating them to develop regional power rather than allowing a single dominant state to become a hegemon

A Non-Destructive Crack Detection Technique Using Vibration Tests

A method of structural damage detection using non-destructive vibration test is presented. It uses the Frequency Response Function (FRF) data and a finite element model of the virgin structure to construct and display Damage Location Vector (DLV). It is shown that DLV can detect, locate and assess the extent of damage. By using the raw FRF data and its wealth of information, DLV can handle experimental noise and the inherent incompleteness of data

Improving the tensile strength of carbon nanotube spun yarns using a modified spinning process

A modified process for the dry spinning of carbon nanotube (CNT) yarn is reported. The approach gives an improved structure of CNT bundles in the web drawn from the CNT forest and in the yarn produced from the twisted web leading to improved mechanical properties of the yarn. The process enables many different mechanical and physical treatments to be applied to the individual stages of the pure CNT spinning system, and may allow potential for the development of complex spinning processes such as polymer–CNT-based composite yarns. The tensile strength and yarn/web structure of yarn spun using this approach have been investigated and evaluated using standard tensile testing methods along with scanning electron microscopy. The experimental results show that the tensile properties were significantly improved. The effect of heat treatments and other yarn constructions on the tensile properties are also reported