Advanced Analysis Techniques for NVH and Sound Quality Improvement

Author(s):  
Thomas Deighan ◽  
Graeme Maclean ◽  
Nozomu Kato ◽  
Kiyofumi Sato
2021 ◽  
Vol 5 (1) ◽  
pp. 104-114
Author(s):  
Ngurah Indra Pradhana ◽  
I Gede Oeinada

This study focuses on particles To and Ni as case particles that function to express the relationship between nouns and predicates in a sentence focusing on the comparative analysis of the two case particles. Based on Tsujimura's opinion, it can be said that in Japanese, case particles are part of a phrase. Case particle is related to the function of the words in the sentence. The method used to analyze the data is Agih method (distributional method). Advanced analysis techniques with substitution techniques were applied in this study. This technique is used to study a case particle in the Japanese sentence structure. This research produces several things that are expected to be helpful to readers. To and Ni case particles can replace each other for the context of sentences that have the following meanings: Pairs Meaning, Translative Meaning, Accusative Meaning, and Ablative Meaning. But on the other hand, To and Ni as case particles can not substitution each other. Especially sentences with the following meanings:  accusative meaning, commitative meaning, partner meaning, citation meaning, alatif meaning, purpose meaning, time markers meaning, diathesis on passive sentences, diathesis on causative sentences, dative meaning, and locative meaning.


Author(s):  
Hany Elosta ◽  
Thierry Gavouyere ◽  
Pierrick Garnier

The demand for the lifetime extension of flexible pipes is increasing due to the need to extend the lifetime of the existing production fields. There have been many challenges with the lifetime extension of flexible pipes after the end of the initial design service life due to the inherent conservatism with the common analysis approach, safety factors and operation beyond the design limits. A lifetime assessment should be performed on flexible risers for re-qualification during the original design life if the design envelope is exceeded or there is a need for lifetime extension. Hence, a systematic approach for lifetime assessment execution is established to determine the integrity level of the flexible risers and define the recommended actions required, such as mitigations, repairs or monitoring to maintain an acceptable risk for the required extended service life based on consistent methodology. The primary objective of this paper is to present a riser integrity management field-proven technology to monitor the riser’s behaviour in-service in addition to the advanced analyses guidelines to form a basis for the lifetime extension of flexible risers. The primary objective for the integrity management is to manage and control the risk of failure by detecting failure at an earlier stage when preventive action can be taken to avoid failure propagation. In addition, it is demonstrated that the primary hot-spots for the dynamic behaviour and fatigue life assessments of the flexible risers are primarily in bend stiffener regions and the touchdown zone (TDZ) due to large tension fluctuations caused by vessel motions and cyclic movement in the TDZ. Therefore, analysis techniques have been developed in two primary areas: advanced bend stiffener modelling using pipe-in-pipe (PIP) to model the sliding friction and the bend stiffener/flexible pipe’s annular space and flexible pipe–seabed interaction modelling using a non-linear seabed model. Therefore, the flexible riser’s lifetime extension assessment will be based on more reliable models that reflect the realistic and dynamic behaviour of the flexible risers. Consequently, these advanced analysis techniques can be used for new designs or lifetime extension of flexible pipes.


2017 ◽  
Vol 181 ◽  
pp. 248-253.e3 ◽  
Author(s):  
John A. Shepherd ◽  
Markus J. Sommer ◽  
Bo Fan ◽  
Cassidy Powers ◽  
Lynda Stranix-Chibanda ◽  
...  

2009 ◽  
Vol 2009.19 (0) ◽  
pp. 66-69
Author(s):  
Akihiko ENAMITO ◽  
Osamu NISHIMURA ◽  
Takahiro HIRUMA ◽  
Shiro ISE ◽  
Takahiro NAKASHIMA

2001 ◽  
Vol 16 (supp01c) ◽  
pp. 1122-1125 ◽  
Author(s):  
PUSHPALATHA C. BHAT

In the next decade, high energy physicists will use very sophisticated equipment to record unprecedented amounts of data in the hope of making major advances in our understanding of particle phenomena. Some of the signals of new physics will be small, and the use of advanced analysis techniques will be crucial for optimizing signal to noise ratio. I will discuss new directions in data analysis and some novel methods that could prove to be particularly valuable for finding evidence of any new physics, for improving precision measurements and for exploring parameter spaces of theoretical models.


Author(s):  
Colin Novak ◽  
Helen Ule ◽  
Robert Gaspar ◽  
Gamal Refai-Ahmed

The continuing challenge to deliver performance improvements in computer graphic cards has long since progressed to the point of requiring finned, passive, cooling devices to dissipate the heat generated by the graphics processing unit (GPU). The heat flux generated by further improvements now exceeds that dissipation capacity so that passive cooling can no longer provide adequate cooling the GPU. The dissipation rates required by the latest generation of designs can be delivered by forced air cooling of finned heat sinks. The concurrent challenge to the industry is to provide this cooling while minimizing the noise generated by these cooling fans. A significant aspect associate with this problem is missed if one only considers the problem to be a one-dimensional sound level issue. From a consumer’s perspective, the perceived quality of the noise emitted takes precedence over what traditional acoustical analysis techniques of this fan noise may imply. Here, psychoacoustic or sound quality metrics, may be a more applicable analysis tool as it provides the quantification of these qualitative human impressions. The present study investigates the validity of using several psychoacoustic metrics for the analysis of fan cooled computer graphics card noise. Using experimentally measured fan noise from three different cooling fan designs, a sound quality analysis was performed using loudness, sharpness, roughness, fluctuation strength, prominent tone and articulation index. A discussion and comparison of measured results using traditional analysis techniques is also included. It was found that some of the metrics proved more useful than others as an analysis tool for this specific noise source. A discussion of the applicability of the various sound quality metrics along with justifications is presented.


Author(s):  
M Rusni Eka Putra ◽  
Ahmad Gawdy Prananosa ◽  
Marianita Marianita

This study aims to know the planning, implementation, control and evaluation of educators in SDIT Mutiara Cendekia Lubuklinggau. This research uses qualitative approach with qualitative descriptive method. The subjects consisted of principals, teachers and staff boards, guardians of SDIT Mutiara Cendekia Lubuklinggau. Data collection consists of observation, interview and documentation. Data analysis techniques include editing, categories, display of data and interpretation. The conclusion of this research is 1), the planning of SDIT educator Mutiara Cendekia Lubuklinggau run well that is recruiting educator by selecting administration of job application file and reading ability test of alQuran as well as micro teaching test, 2) implementing educator through guidance from foundations twice a month, 2013 curriculum training and teacher quality improvement seminars, 3) principals control educators by going to the study room during the learning process, checking the attendance of educators through finger print, and learning journals in the classroom, 4 ) the principal uses a questionnaire, then distributed to the students so that the inputs of the educators in carrying out their duties can be known and carried out by the school principal guidance. Keywords: Management, Educators


Sign in / Sign up

Export Citation Format

Share Document