PMID- 21989883 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20120222 LR - 20111012 IS - 1525-8955 (Electronic) IS - 0885-3010 (Linking) VI - 58 IP - 10 DP - 2011 Oct TI - Design of highly uniform spool and bar horns for ultrasonic bonding. PG - 2194-201 LID - 10.1109/TUFFC.2011.2069 [doi] AB - Although the groove and slot have been widely utilized for horn design to achieve high uniformity, their effects on uniformity have not been analyzed thoroughly. In this work, spool and bar horns for ultrasonic bonding are designed in a systematic way using the design of experiments (DOE) to achieve high amplitude uniformity of the horn. Three-dimensional modal analysis is conducted to predict the natural frequency, amplitude, and stress of the horns, and the DOE is employed to analyze the effects of the groove and slot on the amplitude uniformity. The design equations are formulated to determine the optimum dimensions of the groove and slot, and the uniformity is found to be influenced most significantly by the groove depth and slot width. Displacements of the spool and bar horns were measured using a laser Doppler vibrometer (LDV), and the predicted results are in good agreement with the experimental data. FAU - Kim, Sun-Rak AU - Kim SR AD - Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea. sunrak.kim@kaist.ac.kr FAU - Lee, Jae Hak AU - Lee JH FAU - Yoo, Choong D AU - Yoo CD FAU - Song, Jun-Yeob AU - Song JY FAU - Lee, Seung S AU - Lee SS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - IEEE Trans Ultrason Ferroelectr Freq Control JT - IEEE transactions on ultrasonics, ferroelectrics, and frequency control JID - 9882735 EDAT- 2011/10/13 06:00 MHDA- 2011/10/13 06:01 CRDT- 2011/10/13 06:00 PHST- 2011/10/13 06:00 [entrez] PHST- 2011/10/13 06:00 [pubmed] PHST- 2011/10/13 06:01 [medline] AID - 10.1109/TUFFC.2011.2069 [doi] PST - ppublish SO - IEEE Trans Ultrason Ferroelectr Freq Control. 2011 Oct;58(10):2194-201. doi: 10.1109/TUFFC.2011.2069.